Leaky Gut Expert: This Gut Mistake Leads To Cancer. The Cheap Spice That Helps Repair A Damaged Gut!

Tired of your health issues? Top gastroenterologist DR WILL BULSIEWICZ reveals NEW information about how leaky gut drives inflammation, cancer risk, bloating and brain fog, and the daily habits to heal FAST. Dr Will Bulsiewicz is one of the world’s leading experts on the gut microbiome. He is the US Medical Director at ZOE, founding director of The Gut & Microbiome Center for Excellence and bestselling author of “Fibre Fuelled” and the upcoming book, “Plant Powered Plus”. He explains: ◼️Why inflammation is driven by the gut, not just genetics ◼️How leaky gut triggers bloating and immune dysfunction ◼️The gut-immune link behind cancer and chronic disease ◼️Why fermented foods and fibre rebuild the microbiome ◼️How the gut-brain connection shapes mood, focus, and longevity (00:00) Intro (03:28) What Is Inflammation? (05:36) Can You Be Thin and Still Have Inflammation? (06:11) Why Does Chronic Inflammation Happen? (07:11) The Shocking Link Between Inflammation and Gut Health (10:47) Chronic Inflammation Causes These Diseases (12:17) The Importance of a Healthy Gut (12:52) Faecal Transplants to Heal the Gut (15:26) Link Between Gut Microbiome and Cancer (18:19) Parkinson's Could Start in the Gut (20:40) Can Anyone Get a Faecal Transplant? (21:22) A Lot of Us Have Gut Issues (23:37) Does Gas and Bloating Indicate a Health Issue? (31:34) Everyone Thinks They're Gluten Intolerant (32:36) Processing Issues With Gluten (35:04) Is Sourdough the Best Bread? (36:13) Your Gluten Intolerance Might Be This Instead (38:18) How Long Does It Take to Repair the Gut? (41:17) What Causes Bowel Diseases? (42:42) Antibiotics Double Your Risk of Bowel Disease (43:16) Fixing a Chronic Gut Issue With a Fecal Transplant (47:46) What Diet Trends Spread Misinformation? (51:54) Fibremaxxing and the Importance of Fibre (54:48) Best Foods to Eat for Fibre (59:11) How Fibre Affects Immunity and Ageing (1:00:00) This Is What Alcohol Does to the Gut (1:05:34) Ads (1:07:24) Benefits of Turmeric (1:09:22) Dr Will's Perfect Gut Day (1:19:40) Good Breakfast for Children (1:20:44) What Would Impact Your Child's Gut Health? (1:25:22) Dr Will's Perfect Gut Day (1:33:19) Optimal Time to Workout (1:34:56) Perfect Time Between Meals (1:35:54) Perfect Evening Routine (1:39:23) Would You Recommend Fasting? (1:42:21) Ads (1:44:18) Trauma Impacts Gut Function (1:49:35) How Would I Heal My Trauma-Related Gut Issues? (1:50:42) Stool Test – Is Your Gut Healthy? (1:53:33) Magnesium for Constipation and Sleep (1:55:03) This Is Easier Than You Think – 4 Things You Need (1:58:58) Dr Will's Transformation (2:05:02) Message to My Dad (2:09:34) Your Biggest Regret Follow Dr Will: Instagram - https://bit.ly/457iRAx The Gut Health MD - https://bit.ly/4p2svLU Youtube - https://bit.ly/4aGQJrK Dr Will Bulsiewicz’s upcoming book, ‘Plant Powered Plus: Activate the Power of Your Gut to Tame Inflammation and Reclaim Your Health’: UK Version: https://amzn.to/45hIcb1 US Version: https://bit.ly/49hpCAZ Independent Research: https://docs.google.com/document/d/1YDjg-o8aGLb-Okn6xk3L06SclNtjybYl8pejVf12f2A/edit?pli=1&tab=t.0 The Diary Of A CEO: ◼️Join DOAC circle here - https://doaccircle.com/ ◼️Buy The Diary Of A CEO book here - https://smarturl.it/DOACbook ◼️The 1% Diary is back - limited time only: https://bit.ly/3YFbJbt ◼️The Diary Of A CEO Conversation Cards (Second Edition): https://g2ul0.app.link/f31dsUttKKb ◼️Get email updates - https://bit.ly/diary-of-a-ceo-yt ◼️Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb Sponsors: Stan: NO PURCHASE NECESSARY. VOID WHERE PROHIBITED. For Official Rules, visithttps://DaretoDream.stan.store Adobe Express -https://Adobe. Ly/OneBetter Fiverr:https://fiverr.com/diary and get 10% off your first order when you use code DIARY

Speaker names marked ? are inferred from speaking time and the show’s known hosts — they are not voice-verified.

• 0:00Dr. Will Bulsiewicz?

  What's a fecal transplant? You take a healthy person's poop and you transfer it into the person who's sick. For example, a patient of mine took in antibiotic which wipes out your gut, which became life threatening. And so our choices were to remove the colon or give her a fecal transplant. And so I delivered the fecal transplant to her. By the next day, the entire infectious issue got shut down. So this is a great example to show how important our gut microbiome is. Because 60% of the weight of your stool is your microbiome. Really? Yes, but it's not getting enough attention and we need to talk about that.

• 0:31Steven Bartlett?

  World renowned gastroenterologist Dr. Will Bolsova is back.

• 0:35Dr. Will Bulsiewicz?

  This time he's sharing brand new information regarding the gut microbiome.

• 0:39Speaker 02

  And how poo might actually be the key to your health.

• 0:42Steven Bartlett?

  60% of people that listen are currently struggling with some kind of gut problem.

• 0:46Dr. Will Bulsiewicz?

  And it manifests in these subtle ways like bloating, increased fatigue, difficulty concentrating, you don't sleep well at night, skin issues. So it flies under the radar, but ultimately leads to other health related problems afterwards.

• 0:58Steven Bartlett?

  So I've got so many questions.

• 0:59Dr. Will Bulsiewicz?

  Totally.

• 1:00Steven Bartlett?

  What's the cause of bloating?

• 1:01Dr. Will Bulsiewicz?

  So constipation is the number one cause, but people who are bloated, please don't sip through straws, drink carbonated drinks, chew on gum, because you just make it worse.

• 1:10Steven Bartlett?

  Next, are there decisions that you make as a parent that will have a lasting impact on their kid's gut function?

• 1:15Dr. Will Bulsiewicz?

  Yeah, by three years of age, you are basically fully adult sized in terms of your microbiome. But antibiotics, bottle feeding and birth by cesarean section are associated with an impact on the microbiome, such as an increased risk of allergic, autoimmune and metabolic diseases. And I'll explain why.

• 1:30Steven Bartlett?

  And then can I repair the gut?

• 1:32Dr. Will Bulsiewicz?

  Yeah, 100%. And every three to five days, you build a new gut barrier. And so I've identified four things missing in our diet as well as a daily routine that can optimize our microbiome. And when you do these, you will thrive and you will live longer and you will have less disease. And I'm going to take you through all of these steps right now.

• 1:49Steven Bartlett?

  Just give me 30 seconds of your time. Two things I wanted to say. The first thing is a huge thank you for listening and tuning into the show week after week. It means the world to all of us and this really is a dream that we absolutely never had and couldn't have imagined getting to this place. But secondly, it's a dream where we feel like we're only just getting started. And if you enjoy what we do here, please join the 24% of people that listen to this podcast regularly and follow us on this app. Here's a promise I'm going to make to you. I'm going to do everything in my power to make this show as good as I can now and into the future. We're going to deliver the guests that you want me to speak to. And we're going to continue to keep doing all of the things you love about the show. Thank you.

• 2:33Steven Bartlett?

  Dr. Will, before we started recording, I asked you about this new book that you've written, and the way that you spoke about it was incredibly passionate. Why?

• 2:45Dr. Will Bulsiewicz?

  I sincerely believe that if people take the advice that's in this book and they actually follow it, which is the hardest part, I'm completely convinced it will transform your life. And that's because we all are struggling with the same problem. We manifest it in different ways. But there's this common issue, which is inflammation. And it's the health story of our time. It's not getting enough attention. And this book is not only about shining the light on that, it's about providing people with the evidence-based tools that they need in order to be successful and to live an anti-inflammatory life. And when you do that, you will thrive, and you will live longer, and you will have less disease.

• 3:28Steven Bartlett?

  Can you explain inflammation to me, like I'm a 10-year-old?

• 3:31Dr. Will Bulsiewicz?

  Steve, you have an immune system that protects your body. And inflammation is when we turn that immune system on, and we make it active. And sometimes that's a good thing, right? If you had a tummy bug, you want to clear that infection, right? If you hurt yourself, you want to heal that wound. That's when your immune system is really good, it's working for you. But the problem that we have these days is that we're turning on the immune system when we don't need to. And it's staying on 24 hours a day, seven days a week. And that ultimately creates problems, because it leads to new issues, new health conditions.

• 4:11Steven Bartlett?

  The word inflammation sounds like something has inflated or become swollen.

• 4:16Dr. Will Bulsiewicz?

  Yeah, well, that is a part of the process. For example, if you hurt your knee, right, there will be inflammation in your knee, and it will get red, it will get swollen, it will become tender. And like, those are the typical characteristics of inflammation when it arrives. But what we're talking about is chronic low-grade inflammation. And this is a tricky thing, because it can fly below the radar. It can fly below the radar where you don't Realize that it's there. Your doctor may not realize that it's there. And it manifests in these subtle ways where it's like you have increased fatigue. You have difficulty concentrating. You don't sleep well at night. You wake up with aches and pains. Or you have joints that hurt a little bit. Or you've had skin issues, right?

• 4:59Dr. Will Bulsiewicz?

  And it's like, well, we all have those problems. But that's inflammation. Inflammation is driving many of those issues. And so it's important for people to be aware that, you know, you may like these. There's so many patients that go to their doctor complaining of these symptoms. And the doctor is kind of not really sure what to do about that. And I think it's time for us to like, open our mind and bring awareness to the possibility that there is this issue, inflammation, that's driving that problem, the symptoms, the health conditions of which there are many. And ultimately, we need a plan to address that.

• 5:35Steven Bartlett?

  And is, can you be like skinny and in shape and still have inflammation?

• 5:40Dr. Will Bulsiewicz?

  A hundred percent.

• 5:41Steven Bartlett?

  So it's not just a weight thing?

• 5:43Dr. Will Bulsiewicz?

  No, it's not just a weight thing. Because if you, if you think about, you know, people who are competitive bodybuilders, they look amazing on the outside. And they're falling apart on the inside. And these people often suffer with digestive health problems. I know because they reach out to me, including many people that are well known who look incredible. And they're suffering with gut issues. And then ultimately, they're at risk for other health related problems afterwards.

• 6:11Steven Bartlett?

  So on this point of inflammation is when your immune system kind of stays on. Why does it stay on? And I mean, how do I turn it off?

• 6:18Dr. Will Bulsiewicz?

  Well, we have to start with acknowledging that the reason why this causes problems is that, let's like sort of use an analogy of the immune system is your small army. And they're there to defend you. And when we activate the army and they're actually going to war, you have to expect that there's going to be damage to the surrounding areas, right? Like if people, if there's a war occurring, of course, there's decimation and damage that occurs. And it's brutal. And the problem is that if we're activating the immune system, the areas that are surrounding it, that's your body. Right? And the decimation and destruction that's occurring is within your own tissues,

• 6:59Dr. Will Bulsiewicz?

  within your organs. As I was researching this book, I actually took three years to understand this topic. And what I discovered is a connection between your immune system and your gut that is undeniable. And that connection becomes the powerful factor that allows you to understand why it happens and how we can fix it. We have our gut microbiome, and there are 38 trillion microbes that live inside of our large intestine. And they include bacteria and yeasts and archaea, which are these things that have been on the planet

• 7:38Dr. Will Bulsiewicz?

  for four billion years, and possibly parasites. And so in this entire community of microorganisms, they're there with a purpose, and that is to support you and your physiology. One of their key jobs is actually to basically feed the gut barrier that lines your entire intestines.

• 7:59Steven Bartlett?

  Do you want to show me using this?

• 8:01Dr. Will Bulsiewicz?

  Sure.

• 8:01Steven Bartlett?

  Is this the right part of the body?

• 8:04Dr. Will Bulsiewicz?

  So now, the large intestine is the home to your microbiome. So these 38 trillion microbes, this is their residence, this is their domain where they live. Now, this entire system, which is like on the order of 20 or 25 feet, so like something on the range of six to eight meters, it's coated with a single layer of cells, which we call the epithelial layer. And that is your gut barrier. And it's a quite fascinating part of your body, because this is like the castle wall, and keeps the bad stuff out, but simultaneously needs to allow the good stuff in. And these cells, they turn over every three to five

• 8:47Dr. Will Bulsiewicz?

  days. So it's a beautiful thing, actually, because every three to five days, you have an opportunity to create a brand-new gut barrier. So within the system, the microbes that live inside your colon, their job is to basically repair and restore the gut barrier. And when the gut barrier is intact, it's going to do its job of protecting the immune system. And when the gut barrier starts to break down, then things can sneak across, which we would refer to as increased intestinal permeability, but the common language is leaky gut. The immune system will see and recognize things that aren't supposed to be there.

• 9:31Dr. Will Bulsiewicz?

  And so the immune system then steps up and wants to take it out. And that basically means it needs to get activated and attack. And that is inflammation. So the breakdown of these three systems that start with the microbes, microbes are actually your first layer of defense. And then leading to the breakdown of the gut barrier is what ultimately activates the immune system. When we have things that are sneaking across that are not supposed to be there. The reverse can also be true. And that, to me, is where the exciting opportunity exists, is that if you can heal the gut microbes, then the gut microbes can get back to work and do their job of repairing and restoring the gut barrier.

• 10:14Dr. Will Bulsiewicz?

  And when you create a strong gut barrier, then basically you're protecting the immune system. And then what you see actually is the immune system cools off and it becomes more tactical and capable of doing its job.

• 10:26Steven Bartlett?

  Okay. And when we're eating lots of bad stuff and, you know, many of the things we're going to talk about today are causing a breakdown in those microbes, which is causing the gut barrier to worsen, which is causing the immune system to kick in, which is causing the inflammation. And the inflammation is therefore causing our cells to be damaged. What's the immune system over-functioning causing? Like you're talking about the army analogy, where there's an army and they're at war and some of them are damaging the surroundings.

• 10:59Dr. Will Bulsiewicz?

  Uh huh.

• 11:00Steven Bartlett?

  How is it damaging my surroundings? My immune system being on all the time?

• 11:04Dr. Will Bulsiewicz?

  Well, so what ends up happening is it sets off this sort of chain reaction. Which can have an effect throughout your entire body, where the immune cells, it's not just a couple of immune cells. They start to basically send out signals. And these signals, we call them cytokines. So you can measure those cytokines. And those are basically communication tools that the immune cells are using with each other to basically call for help. So and as they get revved up, these cytokines start to go out. And then this leads to a cascade of even more immune cells releasing even more cytokines. And so and then kick off this wave. And this is what ultimately you can feel throughout your entire body. And it has these consequences

• 11:49Dr. Will Bulsiewicz?

  of basically causing damage to these individual tissues. So it depends on which tissue we're referring to. Inflammation in the liver, we would call hepatitis. Right. But at the same time, we have overwhelming evidence at this point that inflammation in the brain, which we call neuroinflammation, has been associated with mood disorders. So like major depression. Inflammation in the brain has been associated with cognitive disorders like Alzheimer's disease, Parkinson's disease. So and it's not to claim, it's not to claim that all disease literally is related or caused by the gut microbiome. That's not the call. It's more so to say that we need to understand that our immune system is so powerfully connected

• 12:31Dr. Will Bulsiewicz?

  to our microbiome that you cannot separate the two. And there's evidence to suggest that we can, we can manipulate. So whether it be antibiotics which decimate the gut or the alternative, the opposite, would be a fecal transplant, which rapidly reinvigorates the gut and restores that gut architecture and ecosystem.

• 12:51Steven Bartlett?

  What's a fecal transplant?

• 12:53Dr. Will Bulsiewicz?

  So fecal transplant is where you take a healthy person's poop and you transfer it into the person who's sick.

• 13:00Steven Bartlett?

  And where are they administering it?

• 13:02Dr. Will Bulsiewicz?

  The way that I've always done the fecal transplant, because I've done many throughout my career, is during a colonoscopy. So if in theory.

• 13:10Steven Bartlett?

  What's a colonoscopy?

• 13:12Dr. Will Bulsiewicz?

  Yeah, so a colonoscopy is is a medical procedure. Where typically you would be asleep. And while you're asleep, I take a long flexible tube that is about the size of my index finger. And I can pass that with control. All the way through. The entirety of your large intestine, which is about five or six feet long. And I can actually dip into the last part. Of the small intestine, which we call the terminal ileum, which is down here in the right. The right lower part of the abdomen. You're administering the fecal transplant because they they have this vicious infection called C. diff. And and again, those infections, this infection can be life threatening.

• 13:55Dr. Will Bulsiewicz?

  And you're administering the fecal transplant because the antibiotics are not working. So you need an alternative. Where the idea and goal is to restore balance within the gut ecosystem.

• 14:09Steven Bartlett?

  You're putting good bacteria in, not taking bad bacteria.

• 14:12Dr. Will Bulsiewicz?

  Yeah.

• 14:12Steven Bartlett?

  Not taking all bacteria out, I guess.

• 14:14Dr. Will Bulsiewicz?

  So you put and you put the good bacteria in. And when this happens, you're actually all at once. Reinstalling potentially hundreds of species. In balance in the right amounts. So it's like an entire ecosystem transplant. It would be like us being like, OK. Uh, here's this forest that's not doing well. We're going to take the Amazon and we're going to transplant it. Into the space and now that we have all these animals that like do well in the space. The forest is washing and it's vibrant again.

• 14:46Steven Bartlett?

  So going back to our point about the immune system, the reason why the immune system is staying on is because I have. Damaged my gut. And it's essentially trying to repair my gut. And so if I live in a permanent state of a damaged gut because of what I'm consuming. Then I'm going to live in a permanent state theoretically of inflammation.

• 15:04Dr. Will Bulsiewicz?

  The thesis from my perspective is that the modern worlds.

• 15:09Dr. Will Bulsiewicz?

  And the way in which we live is damaging our gut, damaging our microbiome. And then we're suffering the consequence of that, which is disruption of our gut barrier and ultimately the activation of our immune system in this forever war, which is chronic grade inflammation.

• 15:26Steven Bartlett?

  How is cancer associated with this? You talked about 130 different diseases and in your book, I think it's around page 22, you mention, I think it's chemotherapy, where you're making an analogy between how chemotherapy kind of wipes everything out and how a poorly kept gut is associated with an increase in cancer at likelihoods.

• 15:47Dr. Will Bulsiewicz?

  Let's start with this. Your body produces 3.8 million cells every second. Your immune system has the responsibility of identifying where there's a problem and taking it out. You can't possibly create 3.8 million new cells and not have some genetic abnormality that could turn into cancer. Right? So the responsibility of the immune system is to basically be perfect every day of your life and remove those problematic cells before they turn into something bigger and better. It's an impossible task. There's an entire story that's unfolding now in this conversation about how the gut

• 16:27Dr. Will Bulsiewicz?

  microbiome is connected to our immune system and the way in which we treat cancer. And it started really in melanoma. We have been using sort of immune manipulations for a very long time to treat melanoma. But what changed is they were using these things called immunotherapy, to be more specific, immune checkpoint inhibitors. So it turns out that your immune cells have like basically a kill switch. If there was a problem, you could like flip it off immediately. And that specific receptor is called PD1. And the tumors, they're so nasty because they produce this protein that basically activates the kill switch.

• 17:13Steven Bartlett?

  Turns off your immune system.

• 17:14Dr. Will Bulsiewicz?

  And it turns off your immune system.

• 17:17Dr. Will Bulsiewicz?

  So the immune checkpoint inhibitor, the idea is to basically flip that switch back on.

• 17:24Dr. Will Bulsiewicz?

  And by flipping it on, activate your immune system, which will then wake up, see this cancer, be like, okay, that needs to be taken out and go after it. If someone received antibiotics before the immune checkpoint inhibitor, they didn't do well. So then it raised the question, maybe this is a microbiome thing. So they said, okay, well, if antibiotics do this, what happens if we move in the opposite direction and basically like restore the microbiome with a fecal transplant? And what they discovered was incredible results. There's now multiple studies in melanoma where they take people and they give them a fecal transplant from someone who was a responder and give it to the person who's about to go get treated.

• 18:05Dr. Will Bulsiewicz?

  And that's what they did and, and with incredible results, like literally twice as many people were beating cancer relative to the expectation. The fascinating thing about that is that it's not just a cancer story. There's research now in Parkinson's disease. So Parkinson's disease is a neurocognitive disorder. So that means basically it's a, it's a brain condition. Well, it turns out that Parkinson's probably starts in the gut. And this is actually a disorder of the gut-brain connection because both parts are involved.

• 18:49Dr. Will Bulsiewicz?

  It's not just the brain condition. The brain condition is actually the more severe part. So for the people who are listening at home, we have a model out and I have just lifted their skull like Hannibal Lecter and exposed their brain tissue. And what we want to talk about is the brain gut connection, the connections between the brain and their intestines. And so we have classically thought of Parkinson's disease as being a brain, a brain health problem, but I'm here to tell you that this problem begins down here in the gut and involves the connections between the two. Because every single person that I've ever seen with Parkinson's disease, they're constipated.

• 19:33Dr. Will Bulsiewicz?

  All of them. And what's interesting is that they've now shown that the constipation comes before the Parkinson's disease. So now, this doesn't mean for people who are constipated, there's a lot of you out there. This doesn't mean that if you're constipated, you're going to develop Parkinson's disease. There's a very small percentage of people. But it's important to understand that the manifestations of this health condition actually start in the digestive system before they actually transfer up to the brain. And so now, in this study, Steve, what they did is they took these people who have Parkinson's disease, they gave them a fecal transplant.

• 20:11Steven Bartlett?

  They gave them a poo transplant?

• 20:12Dr. Will Bulsiewicz?

  They gave them a poo transplant. And what they found was, a year later, they had a durable, continued benefit in terms of their movement issues. There are now other studies with Parkinson's disease that are showing benefit both for the brain and the symptoms of Parkinson's disease, but also for the gut in terms of that constipation that I was talking about.

• 20:41Steven Bartlett?

  I mean, it begs the question, these poo transplants sound great. Can the average person go and get one?

• 20:46Dr. Will Bulsiewicz?

  I think we need to talk about that. Yeah, we need to talk about that because there was a Netflix special where they made it sound like you should just do it at home. Do not do that. Please do not do that. So, number one, we need to study and adequately understand what the risks are. The fecal transplant makes it sound like this is like the quick, easy thing that you do and you fix your entire life. But that's not the same as rebuilding your microbiome using the lifestyle and diet tools that actually are going to give you the meaningful health impact that you're searching for.

• 21:20Steven Bartlett?

  Over the long term?

• 21:21Dr. Will Bulsiewicz?

  Over the long term.

• 21:22Steven Bartlett?

  A huge percentage of the population struggle with gut problems. We asked the Diary of a C L audience and roughly, it was over 60% of people that listen said that they're currently struggling with some kind of gut problem, whether it's bloating or some kind of discomfort or just digestion issues generally. Now, that's 61% of people responding to those three words, bloating, discomfort, irregular digestion. Then about 15% of people said that they have IBS. 14, 15% of people said self-diagnosed that they think they have irritable bowel syndrome.

• 21:57Steven Bartlett?

  Am I right in thinking the causes of what they're saying they have are wildly different potentially? Or is it like one or two things? Because I'm trying to figure out how I help those sixty one percent of people that, like me, have eat something sometimes and then feel shit and then not really sure what it is, feel a little bit bloated, might feel a bit gassy, might have strange digestion, but not necessarily sure what's causing it and when.

• 22:24Dr. Will Bulsiewicz?

  Yeah. I mean, this is the same issue that I struggle with, right? So I write a book with the goal of trying to help as many people as possible, knowing that you can't, there's no one size fits all, right? So ultimately, it's about empowering people with the right information and helping them to identify. I literally wrote about this in my author's note right in the front of the book, which is basically to say, you're all going to read the same book, but the way in which this book touches you is going to be unique to you. There's going to be something in there that you're going to find that you're like, that's my moment, that's my aha moment, right? And for many people, like just looking statistically, looking at the average American diet, there's a huge opportunity when it comes to diet. And that is where I put a lot of energy and attention because I just, I know what the stats say.

• 23:07Dr. Will Bulsiewicz?

  So I know America needs this. But at the same time, there's a conversation that gets into other topics that, look, the way that we live is different than the way that our grandparents grew up when they were kids. To me, it's more about like helping people to see like what is that one thing for them? There's some people who are going to be listening to this that it's not their diet, it's not sleep, it's not circadian rhythm, it's trauma. And I think that these are things that need to, like, we need to shine a light on that.

• 23:35Steven Bartlett?

  We'll do all of that. On this point about bloating, discomfort, irregular digestion, if I have one of those things, does that theoretically mean that something is not right?

• 23:45Dr. Will Bulsiewicz?

  Everyone gets bloated once in a while. So I think, I think it would be unfair to make it sound like you should never have any adverse symptoms at all.

• 23:53Steven Bartlett?

  But if it's prolonged?

• 23:54Dr. Will Bulsiewicz?

  But if it's prolonged, if it's a chronic health issue, if you're the type of person who you wake up in the morning and you say, I hope today's going to be a good day, I hope I don't have to deal with that specific issue, you have a problem. Like we already know and then we have to work on that to address that issue. And how we go about that, I think, needs to be on some level personalized. But the tools that are at our disposal remain the same. So it's just a matter of like, let's put it on the table. Here are your choices. You pick which ones are most applicable to you. Where are the opportunities for you? And I can't tell you that without knowing more about you.

• 24:30Steven Bartlett?

  What about this issue of people getting gassy, like farting a lot?

• 24:33Dr. Will Bulsiewicz?

  Yeah.

• 24:33Steven Bartlett?

  Is that typically associated with one particular gut issue? Or is that, again, could that be a plethora of issues?

• 24:39Dr. Will Bulsiewicz?

  So it could be, it could be a plethora of issues. This is, this is a common problem. If I have to like, start with what is my number one thing? It's constipation, for sure. A hundred percent. There are so many people who are listening right now that are constipated and they don't even know it. Because they poop every day and they think that how often they poop is the definition. And that's not true. So constipation is what happens when you're not adequately emptying your bowels. And that could be a frequency problem. But it could also be that it's a partial poop.

• 25:17Steven Bartlett?

  Oh, okay. Cause I thought constipation was if you just haven't been, you can't go, you go to the toilet and nothing comes out.

• 25:22Dr. Will Bulsiewicz?

  Look, don't get me wrong. If you, if you don't poop for a week, I know you're constipated. I don't need to ask any more questions. If you go a week, but if it's, there are people who they poop every other day. That's their normal. They feel fine. They don't have any gut symptoms. They don't have a constipation problem. We're okay. Right?

• 25:38Steven Bartlett?

  So frequency is not the be all and end all?

• 25:40Dr. Will Bulsiewicz?

  It's part of the, it's part of the equation, right? But there's also people who they poop. And I want to sort of paint the picture and forgive me, like, I feel very comfortable talking about poop. This is what I've done for a living. But they, they go to the bathroom in the morning, they struggle. It's not satisfying. They had to work really hard to get a little nugget to come out. And then they feel like they still have to go.

• 26:08Dr. Will Bulsiewicz?

  And maybe forty five minutes later, they poop again. Okay, that's not a new poop. You're doing partial poops. You're probably doing a twenty or twenty five percent poop. So you could poop three, four times during the day. You might not still be fully emptying your bowels. Right? And so that, so that's an example of a person who can actually be struggling with bloating and constipation and not think, because they're like, doc, I'm pooping three times a day.

• 26:34Steven Bartlett?

  Where is the gas coming from? And that's, why, why do people, you eat something and then you fart a lot? What, what's going on?

• 26:40Dr. Will Bulsiewicz?

  So gas, so gas travels with poop.

• 26:44Dr. Will Bulsiewicz?

  You may, I don't mean you specifically, Steve. People listening may notice this, that you wake up in the morning and you're farting like crazy. And that farting continues until you actually have your morning bowel movement. And then, once you have your good, healthy morning bowel movement, you feel solid and you're not farting anymore. Right? The gas travels with the poop. So, and the reason why this happens is because, first of all, your poop is not just the leftover remains of your food. Actually, your poop is predominantly your microbiome.

• 27:18Dr. Will Bulsiewicz?

  Sixty percent of the weight of your stool is microbial.

• 27:22Steven Bartlett?

  Really?

• 27:23Dr. Will Bulsiewicz?

  Yes.

• 27:24Steven Bartlett?

  When you say microbial, you mean like the bacteria?

• 27:26Dr. Will Bulsiewicz?

  The bacteria.

• 27:27Steven Bartlett?

  Sixty percent of it's.

• 27:28Dr. Will Bulsiewicz?

  Let me give you an example. If I took your drink and I added some soluble fiber, which is prebiotic, into your drink.

• 27:35Steven Bartlett?

  Yeah.

• 27:36Dr. Will Bulsiewicz?

  There's no grit. There's no roughage. You don't even know it's there. And you're going to have a bigger, healthier bowel movement tomorrow as a result of what I just did. Why? Because I fed your microbes and they grow stronger and then they multiply. And because they multiplied, you have a bigger bowel movement.

• 27:55Dr. Will Bulsiewicz?

  Right? That's the way that that works. Now, don't get me wrong. You eat, you know, a salad. You're going to end up with a bigger bowel movement as well. But a big part of that is the fiber within that salad that's feeding these microbes. They multiply, they grow, and you have a big bowel movement.

• 28:09Steven Bartlett?

  So if that was my, if that was my, my stool, my poop, I'm holding a chocolate bar here. Sixty percent of that would be the microbes.

• 28:17Dr. Will Bulsiewicz?

  Sixty percent of that would be the microbes. Yes. So for that person, when the poop is in gridlock and it's not moving through, then those microbes are basically sitting there with unlimited time to ferment.

• 28:34Dr. Will Bulsiewicz?

  And produce gas.

• 28:35Steven Bartlett?

  Okay.

• 28:36Dr. Will Bulsiewicz?

  So anything they come into contact with, they're just gonna start working on it. So and it's not just like a fiber thing. Anything they come into contact with, it could be protein, they will ferment it, they will produce gas. So this is a big part of the reason why constipation is so strongly associated with gas and bloating.

• 28:52Steven Bartlett?

  When people eat dairy and things like that, I think some people that have gluten, they often tend to get a little bit gassy.

• 28:57Dr. Will Bulsiewicz?

  Yeah.

• 28:58Steven Bartlett?

  Is that constipation?

• 29:00Dr. Will Bulsiewicz?

  Gas and bloating is not just a constipation issue. I would argue that constipation is the number one cause of that particular issue, but there's many potential causes. Number one could be motility, that's constipation.

• 29:12Steven Bartlett?

  What's motility?

• 29:12Dr. Will Bulsiewicz?

  Motility is the way in which your intestines move. So if the intestines move too fast and out of rhythm, you get diarrhea. If the intestines slow down too much, sluggish, you get constipation. We want the intestines in a rhythm because when they're in a rhythm, just like your heart, that's when they perform their best. So and a rhythm basically means predictable, consistent, daily bowel movements. That's ultimately where we would love to be, right? And that in a way taps into like an entire circadian conversation that we can have later. This is a part of your circadian rhythm is a fantastic morning bowel movement. Motility is just one of the causes of gas and bloating. The second is the microbiome.

• 29:56Dr. Will Bulsiewicz?

  If you have a microbiome that's damaged and struggling, it's not going to be able to do its job the way it's supposed to. And part of its job is processing and breaking down fiber. Because the fiber in our diet, we don't have the enzymes to digest it. So it works its way through the intestines, comes into contact with the microbes and the microbes, they have literally 60,000 enzymes that we don't have as humans. They go to work as teams. Fiber stops being fiber, produces short chain fatty acids. This is the way that it's supposed to work.

• 30:33Dr. Will Bulsiewicz?

  When your gut is not happy, they're weak, the microbes are weak. And you're asking them to do work and they can't handle that. And you end up with sloppy digestion and that's gas and bloating. The third thing can be your diet. So you just mentioned dairy, which contains lactose. Lactose can be easily fermented to produce gas. You mentioned gluten. Gluten itself is a protein, so can gluten technically be fermented? Yes, it could be technically fermented, but that's not really, that's not really what's going on. What's happening is that gluten containing foods, which are wheat, barley and rye,

• 31:15Dr. Will Bulsiewicz?

  also contain these carbohydrates called fructans.

• 31:20Dr. Will Bulsiewicz?

  And fructans are actually really good for our microbes. They're prebiotic. But if you consume a very large amount of them and you're not used to eating these foods, it can cause gas and bloating.

• 31:32Steven Bartlett?

  These days, when I was younger, if I had, if I had pasta, I was fine. If I have pasta these days, I'm gonna feel it for the next like two, two days.

• 31:40Dr. Will Bulsiewicz?

  Really?

• 31:41Steven Bartlett?

  Yeah, I don't know, and I didn't even know what's going on. But then other people can eat pasta as much as they want, it seems.

• 31:47Dr. Will Bulsiewicz?

  Out of curiosity, can you go to Italy and eat pasta and be okay or no? Same thing.

• 31:51Steven Bartlett?

  I have not really, not really tried. Anecdotally, I think when I remove, when I have like non gluten bread or non gluten pasta, I, I think I'm, I feel much better. But I, but I'm well aware from speaking to people like yourself that such a small percentage of the population is actually gluten intolerant. But we all kind of think we are to some degree. I think it's, was, was the, the numbers, is it like 20% of people think they are or something?

• 32:17Dr. Will Bulsiewicz?

  So like here in Los Angeles, it's um, like probably 80% of people.

• 32:22Steven Bartlett?

  Think they're.

• 32:22Dr. Will Bulsiewicz?

  Well, like almost everyone's gluten free.

• 32:24Steven Bartlett?

  Yeah.

• 32:25Dr. Will Bulsiewicz?

  Right?

• 32:25Steven Bartlett?

  Which.

• 32:26Dr. Will Bulsiewicz?

  They don't need to be. And, and actually it can cause problems. It can, it can cause problems to be gluten free unless you know what adaptations to make.

• 32:36Steven Bartlett?

  So what are you, when you asked that question about Italy, what are you getting at?

• 32:38Dr. Will Bulsiewicz?

  There's a processing issue in the United States involving wheat.

• 32:45Dr. Will Bulsiewicz?

  Which is that they allow the wheat to be sprayed with glyphosate, which is roundup. It's a weed killer. And they do that to basically dry it out as quickly as possible. So imagine for a moment that you're a farmer and you have this field of wheat, you harvest it, okay? Here are your choices, Steve. You can wait a couple of weeks and let it dry out naturally in the air and store it somewhere. Or you can spray it with this chemical and it will be dried by tomorrow and then you can ship it up.

• 33:14Steven Bartlett?

  Yeah.

• 33:14Dr. Will Bulsiewicz?

  Right. And the problem is that glyphosate is not on the label. You would never know whether it's sprayed or not sprayed unless you're buying organic. If you buy organic, then by definition, they're not allowed to spray it.

• 33:27Dr. Will Bulsiewicz?

  You would never know if it's there. The thing about glyphosate is that it's been approved to exist in our food system under the assumption of safety. Because what it does is it shuts down this thing called the schikimop pathway. And that kills weeds or it kills plants. And we have a workaround. And it has to do with basically amino acids. We have a workaround where we can basically create those amino acids as humans. But the plants can't. So the plants die, we live. But there's a problem, which is that the microbes that live inside of our large intestine,

• 34:12Dr. Will Bulsiewicz?

  they don't have the workaround. So that microscopic amount of glyphosate, you would say, well, us big humans, that's so small. Yeah, well, what do you think happens when it comes into contact with them?

• 34:27Dr. Will Bulsiewicz?

  We know that glyphosate disrupts the microbiome, that it depletes the beneficial bacteria. And the ones that tolerate it the best are the inflammatory ones.

• 34:37Steven Bartlett?

  The bad bacteria.

• 34:38Dr. Will Bulsiewicz?

  The bad bacteria. So you're shifting the balance. And this is, this is a small thing, but I hear from people, Steve, that go to Italy. They say, I can't eat wheat in the United States. And then they go to Italy and they're fine.

• 34:51Steven Bartlett?

  And you think it's that glyphosate?

• 34:53Dr. Will Bulsiewicz?

  Yeah, they don't do that there.

• 34:54Steven Bartlett?

  So if I tried, I'll try organic pasta tonight. And maybe that will be better.

• 35:00Dr. Will Bulsiewicz?

  Yes. And then like the alternative choice is how do you do with bread? Are you okay?

• 35:06Steven Bartlett?

  Uh, not all bread. My, my, generally I stay away from bread.

• 35:11Dr. Will Bulsiewicz?

  Okay. Do you ever eat sourdough?

• 35:13Steven Bartlett?

  Yeah.

• 35:14Dr. Will Bulsiewicz?

  Do you do okay with sourdough?

• 35:15Steven Bartlett?

  Yeah.

• 35:15Dr. Will Bulsiewicz?

  There we go. So here's, here's the second part of this equation. Put the glyphosate, put that aside for a moment. Let's talk about the fructans that we were talking about a moment ago. When you ferment your, uh, your wheat, when you ferment your dough, you actually reduce the fructan content.

• 35:32Steven Bartlett?

  What's fructan?

• 35:33Dr. Will Bulsiewicz?

  So these are the, the long chain carbohydrates that exist in wheat, barley and rice. So if it contains gluten, it also contains these fructans. Like gluten is not the only thing in wheat, right? And these fructans, again, they're good for you. They're good for your microbiome. But people who have a slightly damaged gut, they struggle to process and digest them. So this would explain why some people, they eat, they eat, you know, wheat containing, gluten containing foods and they struggle. But they do okay with sourdough because if you ferment the, the bread, it takes, it reduces the fructan content and actually then you can tolerate it.

• 36:11Steven Bartlett?

  Oh, okay. So you think it might be the fructan in the bread that I have an issue with? And sourdough doesn't have fructan in it?

• 36:16Dr. Will Bulsiewicz?

  Yeah, there was, there was a study that was in gastroenterology a few years ago. Gastroenterology is the top journal in my field where basically they, they sent people home with a bunch of breakfast bars, all right? Not chocolate, but nonetheless, they sent people home with a bunch of breakfast bars, three of them. One of them was a placebo bar, so they didn't add anything special. One of them contained a very large concentration of gluten. And then the third one contained the fructans. And the placebo is our standard, we're going to compare to that. When people ate the gluten containing bar, and these were, by the way, people that, they did not have celiac disease. They did have gluten problems, according to them, right?

• 36:58Dr. Will Bulsiewicz?

  So like, this is like the 20% of people that you mentioned a moment ago, who think they might have a gluten problem. When they ate the gluten containing bar, they actually had less symptoms than the placebo.

• 37:13Dr. Will Bulsiewicz?

  So in other words, the gluten is not the problem. But when they ate the fructan containing bar,

• 37:21Dr. Will Bulsiewicz?

  they were triggered. So basically what this said is that we have been taking this concept of gluten intolerance. And we've we've misnamed it. It's not a gluten intolerance. It's a fructan intolerance. These are people who are tending to struggle with these particular parts of that food.

• 37:38Steven Bartlett?

  What foods contain fructan?

• 37:40Dr. Will Bulsiewicz?

  So wheat, barley and rye.

• 37:43Steven Bartlett?

  Okay.

• 37:43Dr. Will Bulsiewicz?

  And different, there's, there's many different types of fructans, by the way. So you may not react to all of them. You may react to just some of them. But like garlic and onions are also classic. So you hear people who are like, I can't eat garlic. I feel terrible. Right? That's a, that can be a fructan issue. Teff, amaranth, sorghum, quinoa. These are, these are whole grains that don't contain gluten. And they also don't contain fructans.

• 38:16Steven Bartlett?

  Hmm. How long does it take to repair the gut when you have done damage to it? That's a very broad question intentionally, but generally for the average person who's done, who's sort of irritated their gut. How long does it take to restore and for those microbes to go back?

• 38:33Dr. Will Bulsiewicz?

  It really depends. You have to start with, okay, what's your starting point? Right? Like, how deep is the damage? How bad is it? Because for the people who have ulcerative colitis or Crohn's disease, those are forms of inflammatory bowel disease. Those people have the deepest dysbiosis. Dysbiosis is the word that we use for a damaged gut.

• 38:53Steven Bartlett?

  Is it possible to reverse that?

• 38:55Dr. Will Bulsiewicz?

  Um, it's possible to put them into remission. So deeply that they don't have a flare.

• 39:03Steven Bartlett?

  Is that what the flare looks like on this little model that I have in front of me?

• 39:06Dr. Will Bulsiewicz?

  Yes. So, so going back for the people who are listening and not on YouTube, you can flip over to YouTube if you're interested. But what I'm showing here is the model of the large intestine. And the model includes a little area that it looks raw. Ulcerated, it's bleeding. If you, if you were to bump up against it, it's going to start to, you'll start to see blood coming out. So it's like a, it's a very vulnerable, sensitive area. Now, these inflammatory bowel diseases, Steve, I have an interesting study on this topic. They are, to me, the classic gut inflammatory health condition.

• 39:42Dr. Will Bulsiewicz?

  And what's happening is the immune system is attacking the microbiome. So technically, it's not actually autoimmune. Because autoimmune would be you're attacking your own body. The immune system's not attacking your intestines. The immune system is attacking your microbiome and rejecting it.

• 40:03Dr. Will Bulsiewicz?

  And because that's happening, your intestines are stuck in the middle.

• 40:07Steven Bartlett?

  So this here is the immune system attacking the microbiome?

• 40:11Dr. Will Bulsiewicz?

  It's attacking the microbiome, which is in the tube of the large intestine. And the immune system is trying to get at it and kill it.

• 40:19Steven Bartlett?

  Why?

• 40:19Dr. Will Bulsiewicz?

  And because it's decided that it's the enemy. So the immune system is confused because when we're born, we don't have much of a microbiome at birth. It's the closest that we will get to not really having anything.

• 40:33Dr. Will Bulsiewicz?

  And then during the first three years of life, you build your microbiome through your life experience. And by three years of age, you are basically fully adult sized in terms of your microbiome. During this time, your immune system is learning from and with those microbes. So there's this interplay between the two that is undeniable. Where when the microbiome is healthy during childhood, during those first three years, it results in a healthier immune system.

• 41:03Steven Bartlett?

  So what's going on here?

• 41:04Dr. Will Bulsiewicz?

  The immune system is supposed to acknowledge your microbiome as being friendly, and it does not. It decides that your microbiome is the enemy, and so it's taking it out.

• 41:15Steven Bartlett?

  So what do you think is, for someone that has like irritable bowel syndrome or Crohn's disease, and they, or they, you know, they have one of these big sort of ulcers in their small or large intestine. Is it because of their lifestyle typically? Lifestyle change or?

• 41:32Steven Bartlett?

  Or is it lots of things? What's the number one perpetrator?

• 41:35Dr. Will Bulsiewicz?

  Okay, there's clearly a genetic component. Okay, so we have to, we have to be upfront about that, but like, these are, these are things that are not necessary within a person's control entirely.

• 41:45Steven Bartlett?

  Because I mean, there's no evolutionary reason why this would happen. Like, there's no evolutionary reason why you'd have severe gut digestion problems.

• 41:53Dr. Will Bulsiewicz?

  No, it's not, there's no advantage to it at all. And, and these things that, uh, that occur, they were quite rare years ago. In fact, in third world countries today, there's not much inflammatory bowel disease. There's not a lot of Crohn's disease and ulcerative colitis in third world countries. If you go to Africa, there's very little. And what then what you see, though, is as countries industrialize, there's a takeoff and they start ramping up. So within the United States, over the course of 40 years, from 1970 to 2010, ulcerative colitis and Crohn's disease cases were increasing by up to 55%.

• 42:30Steven Bartlett?

  And you can get that at any age?

• 42:32Dr. Will Bulsiewicz?

  You get that at any age, yeah.

• 42:34Steven Bartlett?

  Even if I'm healthy right now, I could do a set of things that would give me this?

• 42:38Dr. Will Bulsiewicz?

  Yes. In fact, if you take, so back to our conversation about antibiotics, if you take antibiotics, your risk of developing an inflammatory bowel disease in the next year just doubled.

• 42:49Steven Bartlett?

  Oh, gosh.

• 42:50Dr. Will Bulsiewicz?

  If you disrupt the gut with antibiotics, which the antibiotics do, there's nothing that will basically like decimate the gut faster, reducing gut diversity, disrupting the gut barrier by 50% during a course of antibiotics and activating the immune system. It really speaks to that, like, if you take antibiotics, these risks of inflammatory health conditions really start to go up. We see this in both adults and kids.

• 43:15Steven Bartlett?

  You had a patient of yours called Michelle who took antibiotics and had a life-threatening swelling of her colon.

• 43:23Steven Bartlett?

  This is, this is the colon, right? Show me where the colon is.

• 43:26Dr. Will Bulsiewicz?

  So the colon is the large intestine.

• 43:28Steven Bartlett?

  Okay, fine, yeah.

• 43:29Dr. Will Bulsiewicz?

  Yeah.

• 43:29Steven Bartlett?

  And so she took an antibiotic and had a life threatening swelling of the, of her large intestine.

• 43:34Dr. Will Bulsiewicz?

  So she took an antibiotic, she took clindamycin, which is a classic skin antibiotic.

• 43:41Steven Bartlett?

  Okay.

• 43:42Dr. Will Bulsiewicz?

  And the problem is that clindamycin wipes out your gut, like, hard. And when that happens, there's a risk that this pathogenic, like, bad bacteria called C. diff. If it's in there, it can multiply. And then you get this infection, the C. diff infection, that causes inflammation of the entire colon. So this patient, Michelle, what happens, I was on call and I get this text. And they say, you gotta come to this room right now, this patient is sick. And she had just been transferred in from an outside hospital. So I was in the middle of typing up a consultation, drop that, run through the hospital, walk into the room. She's clutch, clutching her belly and she's moaning and groaning.

• 44:26Dr. Will Bulsiewicz?

  And she has no clue where she is. She's sweaty, she's pale, her vital signs are completely out of whack. Her heart is racing, she's breathing really fast. And, um, and I did a little test, which is that I gently bumped her bed, just like that. And if a person has severe inflammation of their intestines, they will jump if you do that. Because they have peritonitis, right? Or you could call it an acute abdomen.

• 45:02Dr. Will Bulsiewicz?

  So just by bumping the bed like that was enough for her to, ah, and she's screaming, right? And clutching her belly and she has no clue where she is or what is going on. She's completely delirious.

• 45:14Dr. Will Bulsiewicz?

  She was maxed out on antibiotics. Our choices were to rush her to surgery, remove the colon. Or alternatively, to give her a fecal transplant and give her a shot at keeping her colon. So I take her down to the operating room and I actually used a, I mean, I won't bore you with the details, but I used a special technique that's atypical for what I would normally do because the inflammation was so severe to pass a scope. So the scope that I used was a smaller scope to be more gentle.

• 45:47Steven Bartlett?

  A scope being a tube?

• 45:48Dr. Will Bulsiewicz?

  A scope is a tube. And I mentioned that if you get a colonoscopy, it's the size of my index finger. So it's like probably about a centimeter across, but I instead went with a smaller scope that's more like five millimeters, six millimeters across. It's more gentle and it just makes it harder to do. But I basically passed the scope through her rectum and all the way through her intestines to get it over here on the right side. So it's basically like I have now passed all the way through her large intestine. And in that location, I delivered the fecal transplant to her. And so the amazing thing is that number one, that procedure went really well.

• 46:31Dr. Will Bulsiewicz?

  By the next day, she was a normal human being. She was laying in bed. She was able to have a conversation. And after two days, she was so normal that we were able to send her home. So the entire severe infectious issue that she was facing got shut down and corrected by restoring her microbiome. And then when you restore the microbiome, the C. diff basically gets suppressed and the immune system falls back into balance. The inflammation washed away.

• 47:06Steven Bartlett?

  So do you have like a fridge full of these fecal matters that you can just tap into when you need it?

• 47:12Dr. Will Bulsiewicz?

  No, but there is a company in Massachusetts that does. And so, and that's what most hospitals use is they'll basically have this sent in. But it's actually kind of interesting because there's, there's new development in this space where for the first time, drug companies are actually identifying how to manipulate the microbiome using things that are not actually a fecal transplant, but sort of derived from the idea. Now what they're developing is a way to rebuild the gut and protect it during this period of vulnerability. So that's the new thing that's coming.

• 47:46Steven Bartlett?

  You must hear about so many different types of diets and juice cleanses and whatever else that influencers and podcasters promote that you absolutely hate because you have a deeper understanding of the consequences on the gut. What are some of the biggest diets? Or, I don't know, these sort of trends that you absolutely despise because they are misinforming people about how to create a healthy gut?

• 48:13Dr. Will Bulsiewicz?

  Well, I think the thing from my perspective is that trends fluctuate hard.

• 48:20Steven Bartlett?

  Yeah.

• 48:20Dr. Will Bulsiewicz?

  Right? In 2020, it was like the vegan diet was in. In 2023, it was the carnivore diet. You couldn't have more diametrically opposed diets.

• 48:31Steven Bartlett?

  Yeah.

• 48:32Dr. Will Bulsiewicz?

  Right? And, and so the problem is that to the person who's at home and they're trying to get this figured out, it's very easy to get sucked into whatever the trend is because that's what you're hearing about when you open up your social media. Right? Whereas as I sit here, the science has not changed that dramatically in the last five years. We are working on this, but these are small fluctuations in terms of our understanding of things. It's not a radical, we don't whiplash like that. Right? So nor has your biology. You have the same biology five years ago. So this entire concept of like whipping people over the place is total bullshit from my perspective. I want to start by saying that any person who has the audacity to change their diet in the interest of their health,

• 49:17Dr. Will Bulsiewicz?

  like I actually, I actually think that's incredible. And it doesn't matter what your choice is because you're just trying to figure it out. And ultimately, I just want people to be better. But the problem is that there's a lot of dietary advice that's insane and it comes on both sides, Steve. So absolutely, I don't believe that a 100% meat or organ only diet is in balance or the optimal solution for longevity. But on the flip side, like a fruit only diet, I would never support or recommend either. That's completely insane. What are we doing? So I think that like these highly, the more restrictive that you get, the more that I think you're drifting away from what is quite simple, which is whole food in balance.

• 50:03Steven Bartlett?

  What about these like juice diets and stuff like that people do? People do like a seven day juice diet or water diet, whatever.

• 50:11Dr. Will Bulsiewicz?

  So you will, you will often feel better if you have gut issues and you take away the stuff that's irritating your gut. And so simplifying your diet and doing something like that, you can make yourself feel better on a temporary basis and think that you did something. Generally speaking, that's not really doing much of anything at all.

• 50:33Steven Bartlett?

  How long does it take to both kill and then create new, new gut microbes?

• 50:37Dr. Will Bulsiewicz?

  Well, so the beauty of it is that your gut is very forgiving. So the choices that you make today will be reflected in your microbiome by tomorrow. The beauty of it is that these microbes, like their superpower is that they are able to procreate so fast.

• 50:53Steven Bartlett?

  Procreate meaning?

• 50:54Dr. Will Bulsiewicz?

  Making babies. So they can make, they can create new generations, like estimates are potentially as quick as 20 minutes. And so we can use that to our advantage because if we actually support them with what they need, change can come real quick. And I get back to every three to five days, you build a new gut barrier. So there's an amazing opportunity that we have to actually see some quick health effects.

• 51:22Steven Bartlett?

  Are there any big sort of health myths or diet myths that you're concerned about that people are currently following or believe in particular? Is there anything you look out into the world and think, oh God, that's going to be awful for the gut?

• 51:34Dr. Will Bulsiewicz?

  Oh gosh, it's not something that I pay a ton of attention to because I'm not on TikTok, to be honest with you. So it's, I find it interesting that actually like TikTok, some of the trends that have come more recently are actually on point. So, which feels great because I love it when like people are getting excited about stuff that's good, like the fiber maxing trend.

• 51:54Steven Bartlett?

  I've no head about that one.

• 51:55Dr. Will Bulsiewicz?

  So fiber maxing, it feels like.

• 52:01Dr. Will Bulsiewicz?

  After not really talking about fiber for a really long time, people are starting to come around to the benefits that come from fiber. And this was really exemplified on TikTok with this fiber maxing trend, where people are basically trying to increase their fiber profoundly. So the issue, though, is that you have to ease your body into it. So I think the idea is the right idea of where people are trying to go. But the execution, I just want people to do it in a way where they feel okay. Because if they don't feel well, they're going to bail. And then they're going to think, well, fiber's not for me.

• 52:36Steven Bartlett?

  And what was this trend? It was people trying to just get above their, up and above their daily recommended dose of fiber.

• 52:42Dr. Will Bulsiewicz?

  Yes.

• 52:42Steven Bartlett?

  By eating high-fiber foods.

• 52:44Dr. Will Bulsiewicz?

  Yes, and acknowledging that 95% of people in the United States and 90% of people in the UK are deficient in fiber as we sit here right now.

• 52:52Steven Bartlett?

  And what complications or implications does that have for the one's gut microbiome?

• 52:55Dr. Will Bulsiewicz?

  Massive.

• 52:57Steven Bartlett?

  Because fiber's feeding the good bacteria.

• 52:59Dr. Will Bulsiewicz?

  Fiber is the principal food for the good bacteria. And it is the precursor to short-chain fatty acids. So the short-chain fatty acids are what we create when fiber comes into contact with microbes.

• 53:13Steven Bartlett?

  Short-chain fatty acids are the thing we create when fiber comes in contact with the gut microbiome?

• 53:18Dr. Will Bulsiewicz?

  Yes.

• 53:19Steven Bartlett?

  Bacteria, okay. And the short-chain fatty acids are really good?

• 53:23Dr. Will Bulsiewicz?

  They're so good. In fact, of all the things that I've studied and learned about, these are the most anti-inflammatory thing that I've ever come across. So there's three of them, three main ones. Acetate, propionate, and butyrate. They all have their own distinct effects within the body. They have effects right there in the gut, on the microbes, on the gut barrier, on the immune system.

• 53:50Steven Bartlett?

  And these are produced, these three things you just named are produced when fiber comes in contact with the gut microbiome?

• 53:55Dr. Will Bulsiewicz?

  Yeah, so like if you were sterile, if you didn't have, if you were born without a microbiome, like, you ever hear about Bubble Boy?

• 54:01Steven Bartlett?

  Oh, yeah, there was a film or TV show, wasn't it?

• 54:03Dr. Will Bulsiewicz?

  Yeah, it was like a documentary in the 70s of this kid who was, he was born with this rare genetic immune disorder. And so his family, in order to try to protect him, they isolated him, thinking if, if no bad stuff can get in, then he would be fine, right? So like, He lived in a sterile bubble. So in theory, if you were sterile, you would never get the benefits of these short chain fatty acids.

• 54:28Steven Bartlett?

  Because you'd never have bacteria.

• 54:29Dr. Will Bulsiewicz?

  Because you don't have bacteria.

• 54:31Steven Bartlett?

  Okay.

• 54:31Dr. Will Bulsiewicz?

  So, but we have the opposite of that problem, which is that we have bacteria, but we don't feed them. We don't give them fiber. You can't create something from nothing. So you have to give them the fiber in order to allow them to create the short chain fatty acids from it.

• 54:46Steven Bartlett?

  And the short chain fatty, so I've got my gut microbiome in my gut here. I put fiber in there in the form of what foods are the best foods for fiber?

• 54:55Dr. Will Bulsiewicz?

  Okay, so what we have here is an entire array of choices. And the beauty of it is that there's only one thing that I can spot on these two plates that does not contain fiber. Do you want to guess?

• 55:09Steven Bartlett?

  I guess that it is. Okay.

• 55:14Dr. Will Bulsiewicz?

  You want me to give it to you?

• 55:16Steven Bartlett?

  Is it the, it's not the turmeric, is it?

• 55:19Dr. Will Bulsiewicz?

  No, but the turmeric probably doesn't have very much.

• 55:21Steven Bartlett?

  Okay.

• 55:22Dr. Will Bulsiewicz?

  No, it's the oil. Because the issue is that this is a hundred percent fat. So you by definition cannot have any fiber inside of an oil.

• 55:33Steven Bartlett?

  Okay.

• 55:34Dr. Will Bulsiewicz?

  All right.

• 55:34Steven Bartlett?

  It's like sunflower oil.

• 55:35Dr. Will Bulsiewicz?

  So, yeah, whatever, whatever type. Now, you could have polyphenols, like extra virgin olive oil has polyphenols that are really good for the microbiome. Extra virgin olive oil is actually incredibly good for the microbiome, but it doesn't have fiber. Everything else has fiber. So we have all of these different plant based foods. And the beauty of it is that it doesn't have to be complicated. Fruits, vegetables, whole grains, seeds, nuts and my gooms, they all have fiber.

• 56:01Steven Bartlett?

  Meat?

• 56:01Dr. Will Bulsiewicz?

  Anything that's not a plant does not have fiber.

• 56:04Steven Bartlett?

  Okay, so if it grows in the ground, it has fiber.

• 56:06Dr. Will Bulsiewicz?

  So if it comes, if it comes from a plant, it has fiber. And that includes, by the way, the mushrooms. So the mushrooms are technically fungi.

• 56:15Dr. Will Bulsiewicz?

  But they share a lot of the same characteristics that the plant-based foods do. So there's fiber, there's polyphenols. All of these things we want to include in a healthful diet.

• 56:25Steven Bartlett?

  So if I eat these high-fiber foods, they go into my gut. The microbiomes produce this thing called short-chain fatty acids. And the short-chain fatty acids, they produce more good bacteria, but also they help my immune system calm down?

• 56:39Dr. Will Bulsiewicz?

  Yes. So if you think about, let's go back to the model that we led off with, which is that there's these three parts to your immune system. Or actually, I should call it your defense system. Because your gut microbes are the first layer of defense, right? That was what was broken down by the antibiotics in Michelle. The second layer of defense is your gut barrier, which is the lining of your gut that protects the immune system. And then the third part is the actual immune system itself. We don't even want to have to activate that. We'd rather the first two parts take care of it for us, right? So the beauty of this is that you eat, you consume these high-fiber foods. They come in the contact with your microbes right here in the large intestine. Specifically, the right colon is the classic spot.

• 57:22Dr. Will Bulsiewicz?

  And they unpack them and they release the acetate, propionate, and butyrate. And those three things impact your microbes, impact your gut barrier, impact your immune system. Now of the three, my favorite is butyrate. Because it's the butyrate that has the biggest effect on the microbes, on the gut barrier. Like you literally need butyrate in order to produce the proteins that hold your gut lining together.

• 57:55Dr. Will Bulsiewicz?

  And the butyrate has a direct effect on our immune cells. So these are, again, the most anti-inflammatory thing that I've come across. And part of why we're suffering with these, going back to the original conversation about these chronic inflammatory health conditions. And you asked me, where do they come from? We live in an industrial world where 95% of us, at a minimum, 90% of us, are not getting even close to the amount of fiber that we need. And when we compare this to other places. So there was an interesting study that came out recently where they looked at the microbiome of people in Italy, Singapore. And then they had native tribal people in the Bolivian Amazon.

• 58:42Dr. Will Bulsiewicz?

  And native tribal people in Malaysia. So two indigenous tribes living a, you know, hunter gatherer lifestyle against Italy and Singapore. And what they discovered is that there is this radical difference in terms of the diversity of the microbiome. There's a difference in terms of their their ability to produce short chain fatty acids. And there's this question that comes up about aging. Because as we age, inflammation increases. Is that inevitable? Are we stuck in a position where like, based upon our age, we should just expect that we're going to have more inflammatory issues?

• 59:26Dr. Will Bulsiewicz?

  What they found in the tribal populations is that, actually, that's not true at all. So they were protected against inflammation regardless of their age because of their lifestyle. But they were living, and it's not just what they eat, it's they they wake up when the sun comes up, they sleep when the sun goes down, they're connected to their tribe, they're not looking at Instagram. Like, there's so much to that story. The point being, though, that in the industrial world, like, we're not consuming a sufficient amount of these types of foods.

• 1:00:01Steven Bartlett?

  I guess they're not also drinking alcohol and vaping.

• 1:00:05Dr. Will Bulsiewicz?

  No.

• 1:00:06Steven Bartlett?

  Which we, you know, do a lot more in the Western world.

• 1:00:08Dr. Will Bulsiewicz?

  Yeah, we do.

• 1:00:09Steven Bartlett?

  What impact does that have on the gut microbiome? Because I don't typically hear people talking about alcohol in the gut microbiome.

• 1:00:15Dr. Will Bulsiewicz?

  What we know is that it definitely affects the gut barrier.

• 1:00:20Steven Bartlett?

  I guess it's wiping out my my oral microbiome as well to some degree if I'm pouring vodka into my throat.

• 1:00:25Dr. Will Bulsiewicz?

  It would be the same as it would be the same as using alcohol based mouthwash. Right? Which which now we don't recommend anymore.

• 1:00:33Dr. Will Bulsiewicz?

  And so, yeah, so alcohol, there was a study actually that changed my mind when it comes to alcohol. So I actually don't drink hardly at all anymore. Like, very rarely I'll have a glass or two with my wife if we're on a special dinner. And in this study, they, they basically gave people a significant amount of alcohol and then they tracked every thirty minutes, the measure of their blood alcohol level and simultaneously the measure of what's called lipopolysaccharide. So it's, it comes from the inflammatory bacteria that live inside of our microbiome. It's not supposed to be in your bloodstream.

• 1:01:13Dr. Will Bulsiewicz?

  If it's in your bloodstream, that generally indicates that your gut barrier is insufficient and weak because it's able to get across. And the problem is that the immune system has been trained to identify that lipopolysaccharide as the enemy. And so it gets activated. So, and this is where inflammation comes from. So in this study, they had people have a number of drinks and they start tracking every thirty minutes. And what you saw was that as the blood alcohol level goes up, in parallel, the lipopolysaccharide

• 1:01:57Dr. Will Bulsiewicz?

  goes up. When the alcohol peaks, so did the lipopolysaccharide. There was this weird thing that happened. I don't, I can't explain why, but the alcohol level peaked, it started to come down, and then actually it bumped back up. And when that happened, the lipopolysaccharide followed the exact same pattern. And the lipopolysaccharide did not return to normal until the alcohol level was zero. So when I saw this, from my perspective, to be clear, it wasn't a study of one drink, although we do know that one drink is sufficient to disrupt your sleep and cause other health issues.

• 1:02:39Dr. Will Bulsiewicz?

  But when I saw this, I saw enough to say, I don't think there's any amount of alcohol that's safe.

• 1:02:46Steven Bartlett?

  To summarize what's going on there, the alcohol's coming into the body. It is impacting the gut in some way, which is making the gut... Go into dysfunction and that dysfunction lasts for a little while. Cause I'm trying to understand why you you looked at that and thought, do you know what? Absolutely not. I'm not gonna drink as much as I was.

• 1:03:08Dr. Will Bulsiewicz?

  Yeah, so basically alcohol was causing leaky gut.

• 1:03:12Steven Bartlett?

  Oh, leaky gut, okay.

• 1:03:13Dr. Will Bulsiewicz?

  Yeah, so alcohol was causing leaky gut. That's what that's what we saw in that study. And the fact that the amount of leaky gut was proportional to the amount of alcohol in the blood and that the leaky gut did not return to normal until the alcohol level was zero says to me that any amount of alcohol that's detectable in the bloodstream can create this problem.

• 1:03:36Steven Bartlett?

  Which is gonna cause inflammation.

• 1:03:38Dr. Will Bulsiewicz?

  Which is gonna cause inflammation. We know with total clarity that people who are heavy drinkers, their gut is totally destroyed. And that that's actually a requisite step on the pathway towards developing cirrhosis and alcoholic liver disease. So there are some people who seem to get away with it. Where they can be a heavy drinker and they never actually get cirrhosis. And it

• 1:04:02Steven Bartlett?

  Cirrhosis is

• 1:04:03Dr. Will Bulsiewicz?

  Cirrhosis is the, so the liver sits in your right upper abdomen and its job is to detoxify your bloodstream. And all of the blood that goes to your gut,

• 1:04:20Dr. Will Bulsiewicz?

  the first place that it goes after your gut, as it returns to the heart, is your liver. And it's actually a smart setup anatomically, because we don't want toxic blood to get access to the heart and then circulate and ultimately get back to the brain. So we allow the liver to protect and defend it. But the cirrhosis, what's happening is that basically the liver, which is soft and spongy, like imagine a sponge that you can put it under a faucet. The water goes in one end, spills its way through, comes out the other end. Okay, instead of that, it's just a piece of plastic. Right, it's hard, it's not letting anything through.

• 1:05:03Dr. Will Bulsiewicz?

  That's what, that's what happens when a person develops cirrhosis. So, and there's many causes of cirrhosis. Cirrhosis comes from inflammation, so all cirrhosis, all cirrhosis, health conditions ultimately are inflammatory health conditions. They're all part of the 130 health conditions associated with inflammation. But in this particular setting, what we're talking about is alcohol. And what I'm saying is that to create that inflammation in the liver, based upon the available data, it seems that you have to disrupt the gut microbiome in order to get there.

• 1:05:34Steven Bartlett?

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• 1:06:17Steven Bartlett?

  Post a video sharing your dream and enter to win a hundred thousand dollars. I've just finished writing my third book. I haven't firmed up the title yet, but I have started mocking up some different designs and I've been doing this with Adobe Express, which is one of our sponsors. What I love about Adobe Express is that it makes it so easy for me to obsess over the tiniest details, the typography, the font, the color, the text placement, the stuff that might sound petty to most people, but actually compounds to create something that stands out, something that's one better than the rest. And designing my cover art has reminded me of how many creative things I've learned over the year, but it's also reminded me that there are so many creative minds around me that are also sitting on their own secrets. So I've created the One Better Guide in Adobe Express to bring those tips to you.

• 1:07:02Steven Bartlett?

  And in it, you'll find principles from the very, very best in their industry, turned into quick and easy practices for you to apply. So you can train yourself to create exactly like the best performing teams in the world do. Just head over to adobe.ly/onebetter to download Adobe Express now. And make sure you visit the Learn tab to discover how you can become one better than the rest. There's a orangey looking chemical on the uh.

• 1:07:28Steven Bartlett?

  Plate over there, turmeric. People talk about turmeric a lot when they're speaking about inflammation.

• 1:07:33Dr. Will Bulsiewicz?

  Yeah.

• 1:07:34Steven Bartlett?

  I'm not really sure what the truth is on turmeric and inflammation.

• 1:07:38Dr. Will Bulsiewicz?

  Yeah, you have to be a little bit careful because you could easily overdo it.

• 1:07:43Steven Bartlett?

  Oh, really?

• 1:07:44Dr. Will Bulsiewicz?

  So, well, so we just have to be smart with the way that we approach. Cause the turmeric that we're really talking about is if you were to take it on a consistent daily basis, which actually from my perspective, makes a ton of sense for people that have chronic inflammatory health issues.

• 1:08:00Steven Bartlett?

  So turmeric is helping inflammation go down somehow?

• 1:08:03Dr. Will Bulsiewicz?

  It turmeric is helping inflammation to go down because it blocks another one of the cytokines. So in the same way, we're talking about those walkie talkies and basically pulling the batteries out.

• 1:08:13Steven Bartlett?

  Mm hmm.

• 1:08:13Dr. Will Bulsiewicz?

  Turmeric helps to accomplish that. So there's a specific cytokine that turmeric has that effect. And so it's the, you mentioned curcumin, so curcumin is the phytochemical found in turmeric. Turmeric is the root.

• 1:08:28Steven Bartlett?

  Okay.

• 1:08:28Dr. Will Bulsiewicz?

  Curcumin is the chemical.

• 1:08:30Steven Bartlett?

  Okay.

• 1:08:30Dr. Will Bulsiewicz?

  That actually does the thing. And it turns out that curcumin is what we call a polyphenol. So polyphenols, as we sit here and we look at this beautiful array of all of these colors. Every single one of these foods contains polyphenols that define the color and that impact the gut. Like the onion here would have curcetin and many people have heard of curcetin as being beneficial for longevity. Same would be true for the garlic. So there's different polyphenols for different colored foods. And 95% of them require our gut microbes in order to be activated.

• 1:09:13Dr. Will Bulsiewicz?

  So with turmeric, you just need to be careful with supplements because if you overdo it, if you take too much, that could create an issue though.

• 1:09:20Steven Bartlett?

  Here in front of me, I have a, I guess, I guess this is a perfect gut day. Have you seen this?

• 1:09:26Dr. Will Bulsiewicz?

  Yeah.

• 1:09:28Steven Bartlett?

  I wanted you to explain to me, step by step, how to have a perfect gut day.

• 1:09:35Steven Bartlett?

  Yes?

• 1:09:36Dr. Will Bulsiewicz?

  All right. So I'm going to, I'm going to define for people the way that I would approach the perfect 24 hour rhythm. We have an innate circadian rhythm. Circadian rhythm basically means that our body functions on a 24 hour clock. Why? Because we evolved with the sun. The sun goes up and it comes down. And that is one of the most powerful things that defines everything that exists, both for us as humans and in our entire environment. Right? So everything around us also evolved with the sun and is connected to it. Around 50% of our genes are turned off or on at specific times of day based upon our circadian rhythm.

• 1:10:20Dr. Will Bulsiewicz?

  More than 50% of our microbes rise and fall during the course of our day to meet the moment. Our body thrives on consistency. So what I want to talk about is how do we create a consistent daily routine that can optimize our microbiome? And I'm going to take you through all the different, all the different steps. Let's imagine that the sun comes up and it's seven in the morning. All right. And you naturally wake up and you are consistent about it. You're off to a great start. Consistency with the time that you wake up is a fantastic way to start your day. And what I want you to do in the first five minutes of your day

• 1:11:00Dr. Will Bulsiewicz?

  is I want you to initially just focus on waking up and thinking about your day and how you're going to approach it. Because starting at 7:05, you're going to wake up your microbes. You're going to wake up your body with hydration. So we're going to opt for water. And in a perfect world, I would love to add a pre-botic fiber supplement to that water. So like our company is called 38 Terra. You could add that there or you can add an alternative.

• 1:11:37Dr. Will Bulsiewicz?

  This is the hydration, the water turns on your gut, turns on your brain, turns on your kidneys. So not coffee straight away? No. So pause the coffee. Start with hydration and we're waking up your gut with the water and also with the prebiotic fiber. That's going to feed those microbes in your gut. Okay? So that's at 7:05 and let's pretend that takes you 10 minutes. And so now it's 7:15 and we're going to basically flip the switch to tell your body it's time to go. That we're starting a new day. And this is actually the most powerful moment. So if there's only one thing that everyone takes away, I want it to be this.

• 1:12:20Dr. Will Bulsiewicz?

  Cause I'm giving you the two most powerful levers in terms of activating your circadian rhythm. Number one, sunlight. Or at a minimum, bright light exposure.

• 1:12:34Dr. Will Bulsiewicz?

  So what happens is that light passes through our, our eye and hits the retina in the back of the eye. Enters into, the body detects this and it enters into the optic nerve. And right at the very first spot where you could collect information from both your left eye and your right eye. Sits this part of your brain called the supra chiasmatic nucleus, the SCN. And the SCN is the orchestrator that is the master clock of your circadian rhythm. So like, I would think about it like school. So when we were kids and we went to school, we might've all been wearing a watch. And that watch gives us a general idea of where we are in our day.

• 1:13:19Dr. Will Bulsiewicz?

  All your organs, all your tissues, more than half your microbes, they have their watch. They have a feel for where they are in the day. But it's the alarm that goes off between classes that ultimately is what matters the most. That's the central clock. That's your SCN. Your SCN is basically managing all of that. And there's an entire cascade of things that follows from when you tell the SCN, today started. So that light exposure is what basically activates the SCN to release cortisol. Through a, through a series of events, it releases cortisol. All right. Cortisol is the morning hormone.

• 1:14:00Dr. Will Bulsiewicz?

  It is, it allows us to get activated. It makes protein and, and energy available to our cells. It makes us focused. It actually suppresses our immune system. In that moment, you want more cortisol. And by getting morning light exposure, you can bump it by 50%.

• 1:14:21Dr. Will Bulsiewicz?

  So we're off to a good start. The second lever that we can pull with our outdoor time is exercise. You don't need to do like a full scale workout. I'm not talking about the most vigorous exercise of your day. I'm talking about light exercise. But if you just move your body, right? Which during the summertime, what you would do is like, you might go outside and you might have a ruck vest. And you take a walk, right? When the weather is good. And when it's January and the weather isn't so hot, you might actually have a light box. The light box allows you to stay inside. You just gotta make sure it's 10,000 lux is what you're looking for.

• 1:15:04Dr. Will Bulsiewicz?

  So the light box is the substitute for the sun. And then you could do any form of exercise. You could do squats, you could do lunges, pushups, whatever it may be. You could do jumping jacks, do yoga, right? So during this period of time, if you get light exposure and you exercise, the exercise can add another 25 to 50%.

• 1:15:27Dr. Will Bulsiewicz?

  This is a compounding effect that's going to give you the ultimate morning cortisol peak. And this is essential to propel your day. Because by getting this, you will be more focused. You will be able to do more from a cognitive perspective, like your endurance will be enhanced.

• 1:15:45Dr. Will Bulsiewicz?

  You also will sleep better tonight. And you will, you will notice this on day one. I promise you. So, all right. So, and you're gonna do that for about 20 minutes. So from 7:15 until 7:35, you're gonna be doing your light and exercise. Okay. Ideally, outdoor light whenever possible. If you wear glasses, by the way, take off your glasses. You don't have to look directly at the sun. At 7:35, we're gonna basically come back in. And this is a time for us to now have our coffee.

• 1:16:19Dr. Will Bulsiewicz?

  And also quiet time.

• 1:16:22Dr. Will Bulsiewicz?

  So like to me, we don't have enough time in our day. The day is so fast paced. Right? We need to be intentional about creating opportunities to like activate our parasympathetic nervous system.

• 1:16:36Steven Bartlett?

  Which is?

• 1:16:37Dr. Will Bulsiewicz?

  So there's two sides to our autonomic nervous system. Autonomic is just like you haven't like you, you can't totally control it. It's just going.

• 1:16:46Dr. Will Bulsiewicz?

  One side is sympathetic. Sympathetic is the part that gets you going fast. Like this is your accelerator. All right. And the other side is your parasympathetic, which is your break. It's your rest and recovery.

• 1:17:00Dr. Will Bulsiewicz?

  So now that you've done your outdoor time and your exercise, you come in and we want to give you 10 minutes of just like quiet, low key sympathetic time. So that could be meditation. Breath work. Could be reading your Bible. Could be journaling. Right? Whatever it is that works for you. So you do that with your coffee for 10 minutes. And that brings us to seven 45.

• 1:17:28Dr. Will Bulsiewicz?

  And now you have breakfast. All right. So and breakfast is the perfect opportunity to take your supplements.

• 1:17:34Steven Bartlett?

  Okay. So what breakfast, what supplements?

• 1:17:36Dr. Will Bulsiewicz?

  Okay. So your breakfast.

• 1:17:38Steven Bartlett?

  And what is my breakfast strategy? Am I going for a lot of food? Do I need to have breakfast? Why do I need to have breakfast?

• 1:17:43Dr. Will Bulsiewicz?

  You should have breakfast. You should definitely have breakfast. Yeah. So.

• 1:17:48Dr. Will Bulsiewicz?

  Your metabolism changes during the course of the day.

• 1:17:54Dr. Will Bulsiewicz?

  Your strongest metabolism is first thing in the morning.

• 1:17:58Dr. Will Bulsiewicz?

  And so what that means is that you could literally eat the exact same food at seven 45 or at three in the afternoon. And when you eat it at seven 45, you will get better blood sugar control. You will get better blood fat control. So those are, those are manifestations of our metabolism. And when they're under control, that's actually really good for our body.

• 1:18:24Dr. Will Bulsiewicz?

  So whenever possible, we want to shift our food towards earlier in the day.

• 1:18:29Steven Bartlett?

  And what kind of foods?

• 1:18:30Dr. Will Bulsiewicz?

  I would argue that we go high fiber and moderate protein.

• 1:18:35Steven Bartlett?

  No sugar?

• 1:18:36Dr. Will Bulsiewicz?

  No sugar, yeah, low sugar, right?

• 1:18:38Steven Bartlett?

  Low or no sugar?

• 1:18:39Dr. Will Bulsiewicz?

  Refined carbohydrates should get left out as much as possible.

• 1:18:44Steven Bartlett?

  What's a refined carbohydrate?

• 1:18:45Dr. Will Bulsiewicz?

  Flour or sugar?

• 1:18:47Steven Bartlett?

  Okay, so no?

• 1:18:48Dr. Will Bulsiewicz?

  No baked goods.

• 1:18:50Steven Bartlett?

  No eggs benedict?

• 1:18:51Dr. Will Bulsiewicz?

  Uh, so the exception from my perspective would be if you're, if you wanted to have avocado toast,

• 1:18:57Dr. Will Bulsiewicz?

  then a sourdough.

• 1:18:58Steven Bartlett?

  Quasimodo?

• 1:19:00Dr. Will Bulsiewicz?

  Prefer not, they're delicious, but no, I prefer not because ultimately what we want is we want, we want high fiber and moderate protein. And by doing that combination, it's maximum satiation, so you're gonna feel full. You're giving your body what it needs from a protein perspective, and you're simultaneously giving your gut what it needs from a fiber perspective.

• 1:19:23Steven Bartlett?

  Oats?

• 1:19:24Dr. Will Bulsiewicz?

  So, I mean, you could do oats, for the reasons that we were discussing glyphosate earlier, the oats should be organic. And if you were to do them, do them as minimally processed, so like I don't really love instant oats.

• 1:19:38Steven Bartlett?

  What about for kids? If I'm, you know, giving my kids a breakfast, should I be thinking about anything in particular? Cause you know, a lot of, a lot of parents, I've talked about this quite a few times before, but when I was younger, I'd, I'd get a lot of orange juice. And I didn't realize that orange juice was just like sugar water.

• 1:19:53Dr. Will Bulsiewicz?

  Yeah.

• 1:19:54Steven Bartlett?

  Is there anything that parents should be thinking about when they're giving kids their breakfasts?

• 1:19:57Dr. Will Bulsiewicz?

  Of course. Um, and I think that the most important thing is that you need to model for your kids what a healthy breakfast looks like.

• 1:20:05Steven Bartlett?

  By having it yourself?

• 1:20:06Dr. Will Bulsiewicz?

  By eating it yourself. Because if you don't do that, then they're, you can't expect them to. So, um, healthy breakfasts, my kids, I have four kids. So my kids love avocado toast, they love avocado toast.

• 1:20:21Dr. Will Bulsiewicz?

  You could absolutely do yogurt with berries, right? You could do berries and nuts. There's a lot of different choices in that regard. So overnight oats, chia pudding, these are different choices that you could do, for sure.

• 1:20:32Steven Bartlett?

  On this point of kids, before we carry on with our perfect morning and day routine, are there decisions that you make as a parent to give your kids certain things that will have a lasting impact on their immune and gut function?

• 1:20:46Dr. Will Bulsiewicz?

  A hundred percent. Yes, and the, I think it opens up a discussion about where the connection between our gut and immune system starts. It starts before birth. The first three years are critical. So let me unpack that just a little bit. Steve, they have studies where they look at mom's microbiome during pregnancy. Alright, so like mom poops, they analyze her poop. And they're able to basically identify patterns that are associated with the kid developing allergic diseases later on.

• 1:21:27Steven Bartlett?

  Oh, okay.

• 1:21:28Dr. Will Bulsiewicz?

  They also have studies where moms who increase their fiber intake during pregnancy reduce the likelihood of their kids developing allergic diseases later on as well.

• 1:21:40Steven Bartlett?

  What about kids taking antibiotics? Does that have a, when you're forming your gut microbiomes at a young age, does that have a consequential impact?

• 1:21:47Dr. Will Bulsiewicz?

  A hundred percent. Antibiotics, bottle feeding, and birth by cesarean section, and by the way, all of my kids were born by C-section. It's not what we wanted, but it's what happened. But those three things are associated with an impact on the microbiome and the immune system. And if you look downstream over the course of the first five years, increased risk of allergic diseases, increased risk of autoimmune diseases, increased risk of metabolic diseases.

• 1:22:17Steven Bartlett?

  Because in the C-section, the baby didn't pass through...

• 1:22:20Dr. Will Bulsiewicz?

  The birth canal.

• 1:22:21Steven Bartlett?

  The birth canal, and the birth canal would have given the baby some of the mother's microbiome.

• 1:22:25Dr. Will Bulsiewicz?

  Yes, so...

• 1:22:26Steven Bartlett?

  And then breastfeeding does the same. It gives the baby microbiome.

• 1:22:28Dr. Will Bulsiewicz?

  Breastfeeding gives them access to mom's skin microbiome.

• 1:22:32Steven Bartlett?

  Oh, okay.

• 1:22:33Dr. Will Bulsiewicz?

  But also breast milk contains these things called HMOs, human milk oligosaccharides. It's quite fascinating to consider this. We evolved where mom's breast milk contains these things, human milk oligosaccharides. There's over 200 varieties. They have no nutritional value to the child directly. So why do we, why do we have them? Because they're prebiotic. So these human milk oligosaccharides in breast milk were basically designed to feed the developing baby microbiome.

• 1:23:05Dr. Will Bulsiewicz?

  So and this is part of why we get into some challenges where when you replace it with with the bottle, the formula, you might put fiber in there, but it's like a mono fiber. It's not the same as the 200 plus varieties of human milk lycop酸ryides. So there was a study that was done out of Finland where they looked at roughly 1100 kids and they tracked them for five years. And during this time, five years, they got a microbiome specimen, poop specimen from the kid at three months and 12 months of age. And they looked at, okay, so some of these kids develop allergic diseases.

• 1:23:46Dr. Will Bulsiewicz?

  So eczema, food allergies, asthma, rhinitis, allergic rhinitis. All right, those are the classic allergic diseases. And what they found is, okay, there were certain factors that predicted who was going to develop allergic diseases by the age of five. Number one, exposure to antibiotics in the first year of life. Number two, being bottled food. All right, then they looked at the microbiome at 12 months. So and just to be clear, these kids, they had not developed the allergic disease yet.

• 1:24:31Dr. Will Bulsiewicz?

  That comes later. But they looked at the microbiome at 12 months and they could tell who was going to develop the allergic diseases later on because there was a specific pattern. What was missing were the bacteria that produce short chain fatty acids.

• 1:24:47Steven Bartlett?

  And the short chain fatty acids of that chemical we talked about earlier on that

• 1:24:51Dr. Will Bulsiewicz?

  that you get from fiber.

• 1:24:52Steven Bartlett?

  Which produces those three things.

• 1:24:54Dr. Will Bulsiewicz?

  Yes.

• 1:24:55Steven Bartlett?

  Butyrate.

• 1:24:56Dr. Will Bulsiewicz?

  Butyrate, acetate, and propionate. And, and in fact, when they checked the poop for butyrate levels, the butyrate levels were low. So in essence, what they discovered in this study that was quite fascinating is that you can look at the microbiome and predict who will later on go on to develop these, the confused immune system.

• 1:25:19Dr. Will Bulsiewicz?

  With these allergic diseases. So going back to our daily routine. Yep. Where are we going to? Yes, we're at seven forty five and you so you want your high fiber, moderate protein, as little sugar as possible breakfast. And this is the perfect time to take your morning supplements. Because the morning supplements, the ones that I recommend that are evidence based are vitamin D, omega threes and turmeric. That's for inflammation. So these are for inflammation. Okay. Yeah. So now, I also believe that we should test whenever possible. There's a test for vitamin D. There's a test for omega threes. If you have enough, you don't need to take the supplement. But if you're deficient, that's where supplements play an important role.

• 1:26:04Dr. Will Bulsiewicz?

  So I believe that the supplements should be taken consistently in a circadian fashion. So that means that we take our morning supplements at the same time every day. Why? Because basically everything about our microbes and our body and the way that it works thrives on consistency. So supplements would be the same. And when we do this, so it's been seven forty five, we've had our breakfast, we've taken our morning supplement stack. And now it's been an hour since we woke up. And it's time for a fantastic bowel movement. And that is the manifestation of all of the work that you've done. Because when you get your morning light exposure, that helps to contribute to that bowel movement.

• 1:26:48Dr. Will Bulsiewicz?

  When you exercise, that contributes to that bowel movement. When you drink your coffee, that contributes to that bowel movement. All these different things ultimately lead to this to this place where you're having that good, healthy bowel movement. And that's indicative of a gut that's in rhythm and doing well. So that's your morning. Now you're going to go to work. And I want to circle back to roughly the lunchtime hour. So it gets to be lunchtime. And it's 12 noon. And basically, I would advocate for people to have lunch with another person, like the way that you and I are sitting here at this table right now. So because we don't do that enough, like way too much.

• 1:27:29Dr. Will Bulsiewicz?

  We're on our phone like this and eating at the same time that we're flipping and scrolling.

• 1:27:34Steven Bartlett?

  How is that good for my gut and inflammation, though?

• 1:27:36Dr. Will Bulsiewicz?

  So feeling socially bonded to another person, 50%, this is, by the way, statistics that come from before the pandemic. Right? So the pandemic made this worse. 50% of people in America were lonely before the pandemic even started. Loneliness is the equi- loneliness will destroy your longevity faster than just about anything. Loneliness is, has been shown to be on par with smoking cigarettes on a routine basis in terms of the impact that it has on your health and your longevity.

• 1:28:11Steven Bartlett?

  And you're quite clear there that you define loneliness as the feeling of disconnection versus being alone?

• 1:28:17Dr. Will Bulsiewicz?

  Right. Yes. So but being alone, you have to think about where we came from. So we are tribal by our nature. Like, you have to understand that for millions of years, humans lived the specific lifestyle of being hunters-gatherers in our tribe. There was no money. The currency of wealth was your bonds to other people. That's what allowed you to survive and thrive. Your family was like basically the measure of wealth. The bigger the family, the more wealthy you were, because you would work together to support one another and take care of each other.

• 1:29:02Dr. Will Bulsiewicz?

  But then the broader tribe, which is not 300 people, let alone hundreds of thousands on social media, the broader tribe, which was this like family of families, we were in it together. If you and I were in the same tribe, if someone attacked us, I know that you would step up to defend me and I would do the same for you.

• 1:29:19Steven Bartlett?

  So this is causing some kind of cortisol issue, stress issue, that's then impacting the gut microbiome and causing inflammation?

• 1:29:25Dr. Will Bulsiewicz?

  If we want to torture a person, like literally, the easiest way to do it is to put them in solitary isolation.

• 1:29:35Dr. Will Bulsiewicz?

  That's literally torture. We're so social that we need that.

• 1:29:38Steven Bartlett?

  And it's the cortisol response that that's gonna cause, that that's that then causes inflammation?

• 1:29:42Dr. Will Bulsiewicz?

  That is correct. So ultimately, that is a manifestation of the brain gut connection.

• 1:29:46Steven Bartlett?

  Okay.

• 1:29:47Dr. Will Bulsiewicz?

  We have it, we have an innate need of human bonding. And when that innate need is not met, then it's actually quite stressful for us because we feel vulnerable and unsafe.

• 1:29:59Steven Bartlett?

  We sleep worse as well. I was reading about some stuff around when people feel lonely, they go into self preservation. Just kind of like, I guess, the analogy would be if you drifted off from your tribe.

• 1:30:07Dr. Will Bulsiewicz?

  Yeah.

• 1:30:08Steven Bartlett?

  You'd have to be a bit more alert. You'd have to be on edge. You'd have to be wait, you know, you couldn't sleep for eight hours in peace because you're in danger now.

• 1:30:16Dr. Will Bulsiewicz?

  Yeah.

• 1:30:16Steven Bartlett?

  You don't have that sort of insulating factor of a group of people.

• 1:30:19Dr. Will Bulsiewicz?

  It's so interesting to think about, like, there's a condition called Stockholm syndrome. And Stockholm syndrome is what happens if you take a person hostage. And in that scenario, you're the person who's taken hostage, you have a choice. You can reject the person who's taken you, or you can actually find the good in them and bond with them. And it's actually a survival mechanism that within that context of being taken hostage, people have a tendency to bond with their captor and have sympathy for them. And that's, and we think that's a defense mechanism because we're so social, we need that. As opposed to like being alone and being held captive.

• 1:30:57Steven Bartlett?

  Okay, so we socialize at lunch, we have dinner with other people.

• 1:31:00Dr. Will Bulsiewicz?

  Yes, so I want people to socialize at lunch to address this epidemic of loneliness that I think is highly problematic and not and not to be underrated because, again, that's like smoking a pack of cigarettes. So let's imagine that we have a nice lunchtime, that we're not talking about 10 minutes, we're talking about 45 minutes. That includes conversation, right? And we get to the end. And now what I would encourage people to do before you go back to work is to get outside and take a walk. So there's two advantages to this. We talked earlier about the benefits of sunlight in the morning and also the benefits of exercise in the morning. We're circling back to that. But things are a little bit different this time. By getting outside, you're getting different rays of sun.

• 1:31:43Dr. Will Bulsiewicz?

  So the actually, the types of rays that we get from the sun are slightly different and they're more likely to boost our serotonin later in the day. And that serotonin is what lifts our mood, gives us focus, helps us to get to get things done. So this reinforces our circadian rhythm when we take a walk and we get outside a second time.

• 1:32:07Dr. Will Bulsiewicz?

  Also, the exercise, a 10 minute walk. Just 10 minutes of simple walking is enough to get 30 to 40% improvement in your blood sugar control.

• 1:32:19Dr. Will Bulsiewicz?

  Because when you activate the big muscles in your leg, it helps to draw the blood sugar out of your bloodstream.

• 1:32:26Dr. Will Bulsiewicz?

  So like it's uh, the messaging there is if you just ate too much and you don't feel well, force yourself to take a walk as opposed to laying on the couch.

• 1:32:38Dr. Will Bulsiewicz?

  Alright, so um, and the outdoor walk also activates our gut. And helps our gut to get into rhythm and that reduces bloating after a meal. Okay, so and then you do that for 15 minutes, it's one o'clock, you're back to work. I encourage people to have a matcha green tea. Um, I'm a big matcha believer. This is of all the teas that exist, it has the highest polyphenol content. And it's phenomenal for the microbiome. So and it gives you a nice boost to your afternoon. Okay, let's accelerate to four o'clock.

• 1:33:17Steven Bartlett?

  I saw you, um, I think it was in your book that I read this year. In your book, it talks about how the gap between sort of three and six is the optimal time to exercise.

• 1:33:26Dr. Will Bulsiewicz?

  That's right. Yeah, so.

• 1:33:28Steven Bartlett?

  Three and six PM.

• 1:33:29Dr. Will Bulsiewicz?

  The reason for that has to do with our core body temperature. So our temperature cools off at night, our body temperature lowers at night. And then during the day, it starts to rise in the morning. Exercise, by the way, in the morning helps to accelerate that, but our peak is three to six PM.

• 1:33:47Steven Bartlett?

  I felt attacked on page 159 of your book where you said, my one request is that you do not have a heavy exercise late in the evening as this activates the paraps, sorry, the sympathetic nervous system and can negatively affect your ability to quickly fall asleep.

• 1:34:01Dr. Will Bulsiewicz?

  Yeah, what time are you working on?

• 1:34:02Steven Bartlett?

  I mean, last night it was like bloody, oh god, 11 till midnight.

• 1:34:05Dr. Will Bulsiewicz?

  Oh, no.

• 1:34:06Steven Bartlett?

  That's like quite typical though, because I don't know, I just, it's when I get my time.

• 1:34:09Dr. Will Bulsiewicz?

  How's your sleep?

• 1:34:11Steven Bartlett?

  Last night all great, but I mean, a series of issues took place.

• 1:34:14Dr. Will Bulsiewicz?

  Two hours, so, okay, fair enough.

• 1:34:16Steven Bartlett?

  You know, like a series of like my

• 1:34:18Dr. Will Bulsiewicz?

  Other issues.

• 1:34:18Steven Bartlett?

  The time I ate was bad and the time I went to the gym was bad and so

• 1:34:23Dr. Will Bulsiewicz?

  It was a mess.

• 1:34:23Steven Bartlett?

  Was it was a mess.

• 1:34:25Dr. Will Bulsiewicz?

  Yeah, well, ideally, two hours before bedtime.

• 1:34:28Steven Bartlett?

  Okay.

• 1:34:29Dr. Will Bulsiewicz?

  At least two hours before bedtime. So, and like especially when it's vigorous exercise. If it's light exercise, it's not a big deal. But vigorous exercise is a different story. So, yeah, so three, three to six, this is more from like an exercise performance perspective. Like, that's the best time if you want to lift heavy weight.

• 1:34:44Steven Bartlett?

  Okay.

• 1:34:44Dr. Will Bulsiewicz?

  Three to six P M. So let's imagine that we go and we get, we smash a workout at four o'clock. Right? And so I'm gonna give us an hour and smash that wonderful workout. And then now it's five and it's the perfect time for dinner. I want to point something out real quick. I, we had breakfast around eight. And we had lunch around noon. And we had dinner around five. We've spaced things out by about four hours. And that's actually the perfect time from, from the perspective of your digestive rhythm. So there's this thing, this, this concept within the, the gut that many people haven't heard of called the migrating motor complex. Where between meals, your gut has this entire thing that it does.

• 1:35:28Dr. Will Bulsiewicz?

  And it basically is like sweeping through and reorganizing itself. But it gets disrupted if you eat. So it's ideal to give a four hour space between these meals. And that, if you do that, you will actually notice a difference in terms of how you feel with your digestion. So because you've allowed your gut to fall into a rhythm.

• 1:35:53Dr. Will Bulsiewicz?

  All right. So we have our dinner. It's five o'clock. We're moving into the evening. And now it's gonna be seven o'clock at night. And let's imagine, I know this time of year, the sun is going down much earlier than this in most places. But imagine that it's seven o'clock. Look, when the sun goes down,

• 1:36:13Dr. Will Bulsiewicz?

  you want to start to dim the lights in your house. You want to start to reduce your personal light exposure. Because light exposure, just casual lights within your home, can cut your melatonin down by thirty percent.

• 1:36:30Dr. Will Bulsiewicz?

  Melatonin is the sleepy time hormone. So in the morning, it's cortisol. And in the evening, it's melatonin. And it's interesting because what we did in the morning with both exercise and with light exposure, it was designed not only to enhance that cortisol peak, but it also increases our serotonin. Serotonin, the happy hormone that keeps us focused. Well, serotonin is actually the precursor to melatonin. So when you make the investment of morning light, morning exercise, you're setting yourself up for excellent sleep in 14 hours. So, and we want to protect that.

• 1:37:15Dr. Will Bulsiewicz?

  Melatonin is going to start to rise when it gets dark outside. And so we want to dim the lights within our home. And we want to really be cautious as we move towards 8 o'clock. If our bedtime is going to be 10, forgive me if that's too early for some people, but I think it's like nice to have a consistent bedtime. If our bedtime is 10, then by 8 o'clock, like we want to be sort of dialing back on our devices or wearing blue light blocking glasses. The blue light blocking glasses can help to protect us. And then roughly 8:30, take your evening supplements. So we had our morning supplements, which were vitamin D, omega 3s, and turmeric. Now we want to take our evening supplements, which are zinc and magnesium.

• 1:38:00Dr. Will Bulsiewicz?

  And if you take melatonin, that would be the time to do it. Or if you take a different sleepy time supplement, that would be the time to do it. Roughly 8:30 to 9:00, somewhere in that range. So, because it's going to take about 60 to 90 minutes to really kick in. Around 9 o'clock, we want to activate our evening ritual. And so in the morning, we had our quiet time. We should have a quiet time in the evening too, to intentionally activate our parasympathetic nervous system and get like relaxed before bedtime.

• 1:38:35Dr. Will Bulsiewicz?

  So that at nine thirty, we basically are preparing for bedtime. And that might mean a hot shower, like actually like heat at night, hot shower, sauna is perfect. Because actually, it cools off your inner core temperature, believe it or not. So, and that's exactly what we want. We want a cool room. We want a dark room. And that will help us to sleep better because then at ten o'clock, we want to go to bed. At ten o'clock, like it could be whatever time, but I would argue that we should be consistent. It could be ten thirty, it could be eleven, whatever time you choose, adapt to it. But the point from my perspective is not so much ten is the magic number. It's more so that ten is the magic number if you always do ten, ten thirty is the magic number if you always do ten thirty. Consistency is key.

• 1:39:20Steven Bartlett?

  And you would recommend three, three meals a day?

• 1:39:23Dr. Will Bulsiewicz?

  I think that you could do three meals. I think the like the, the way that we structured this is that if you were done eating at six o'clock at night and then you're having breakfast around eight, you have a fourteen hour fast.

• 1:39:35Steven Bartlett?

  Do you think that fasting window matters?

• 1:39:38Dr. Will Bulsiewicz?

  That specific number fourteen or in general?

• 1:39:39Steven Bartlett?

  No, just like generally, generally having sort of a big intermittent fasting window where you, you haven't eaten for sixteen hours, whatever it might be.

• 1:39:46Dr. Will Bulsiewicz?

  I think that there's, so I think that there, there's two parts to the value that we get from time restricted eating. So the first is we give our gut a time to rest. So when you, when you particularly eating late at night, like honestly, the timing of it all could be debated. The one spot where it's a total non-negotiable from my perspective is late night eating. So, I mean, no offense, like sometimes we're busy, right? But when you eat late at night, it hits you different metabolically.

• 1:40:16Dr. Will Bulsiewicz?

  And then it carries and it lingers into the next day. And it will affect your sleep.

• 1:40:20Steven Bartlett?

  Yeah.

• 1:40:21Dr. Will Bulsiewicz?

  So we really, as much as possible, want to opt for early dinnertime and then shut it down for the evening. As much as possible.

• 1:40:29Steven Bartlett?

  People will be saying, yes, but I'm hungry. And I think part of the reason that they're hungry, from what you've explained, is probably because they didn't have breakfast.

• 1:40:37Dr. Will Bulsiewicz?

  Yeah.

• 1:40:37Steven Bartlett?

  They like started eating later. That's typically what I find is if I have breakfast, I'm typically not hungry late at night.

• 1:40:42Dr. Will Bulsiewicz?

  Yeah. Yeah, I think that I think that breakfast helps to sort of set the tone for the rest of the day in a specific way. So the two advantages of time restricted eating are that you get that you get that gut rest, which anything over 12 hours is good for the gut. And then the second part is, I think it just, the underrated thing that no one talks about is it helps us to get more consistent with our mealtimes. So this entire conversation about circadian rhythm can be summarized in one word, consistency. If you ate at the same time every single day, you would feel the difference in terms of your digestion. I promise you. And so the advantage of time restricted eating is it brings attention to what time am I eating dinner? What time am I eating breakfast?

• 1:41:26Dr. Will Bulsiewicz?

  And then you end up being a lot more consistent about it as opposed to just flying by the seat of your pants.

• 1:41:30Steven Bartlett?

  Do you fast ever? Do you try and?

• 1:41:32Dr. Will Bulsiewicz?

  Like long fast?

• 1:41:33Steven Bartlett?

  Long fast or just sort of more time restricted eating?

• 1:41:37Dr. Will Bulsiewicz?

  I do. I do time restricted eating all the time. In fact, I most days, like, I, first of all, I'm imperfect. And so what that means is I don't perfectly follow all the advice I give. So like, I don't eat breakfast most days.

• 1:41:50Steven Bartlett?

  Yeah.

• 1:41:51Dr. Will Bulsiewicz?

  Because I'm going hard. So like, I wake up, I do my morning routine, I get to the coffee stage, and I jump into work.

• 1:41:57Steven Bartlett?

  Same.

• 1:41:58Dr. Will Bulsiewicz?

  So, but on the weekend.

• 1:41:59Steven Bartlett?

  You eat in today?

• 1:42:00Dr. Will Bulsiewicz?

  Today I did. Yeah, yeah. Today I had my breakfast because I wanted to be on my game. But on the weekend, I have my breakfast, I notice the difference, actually. Like, I'm less hungry during the day when I have that breakfast. That sort of just keeps it balanced. So, yeah, I, sometimes I do one meal a day.

• 1:42:21Steven Bartlett?

  Last month, I told you about a challenge that I'd set our internal FlyTix team. FlyTix team is our innovation team internally here. I tasked them with seeing how much time they could unlock for the company by creating something that would help us filter new AI tools to see which ones were worth pursuing. And I thought that our sponsor Fiverr Pro might have the talent on their platform to help us build this quickly. I talked to my director of innovation, Isaac, and for the last month, my team Flight X and a vetted AI specialist from Fiverr Pro have been working together on this project. And with the help of my team, we've been able to create a brand new tool which automatically scans, scores and prioritizes different emerging AI tools for us.

• 1:43:00Steven Bartlett?

  Its impact has been huge. And within a couple of weeks, this tool has already been saving us hours trialing and testing new AI systems. Instead of shifting through lots of noise, my team Flight X has been able to focus on developing even more AI tools, ones that really move the needle in our business, thanks to the talent on Fiverr Pro. So if you've got a complex problem and you need help solving it, make sure you check out Fiverr Pro at fiverr.com/diary. If there's anything we need, it is connection, especially in the world we're living in today. And that is exactly why we created these conversation cards, because on this show, when I sit here with my guests and have those deep intimate conversations, this remarkable thing happens time and time again. We feel deeply connected to each other.

• 1:43:44Steven Bartlett?

  At the end of every episode, the guest I'm interviewing leaves a question for the next guest, and we've turned them into these conversation cards. And we've added these twist cards to make your conversations even more interesting. And there are so many more twists along the way with the conversation cards. This is the brand new addition. And for the first time ever, I've added to the pack this gold card, which is an exclusive question from me. But I'm only putting the gold cards in the first run of conversation cards. So get yours now before the limited edition gold cards are all gone. Head to the link in the description below. One of the things we touched on briefly at the beginning was this concept that trauma is linked to gut function.

• 1:44:25Dr. Will Bulsiewicz?

  Powerful.

• 1:44:25Steven Bartlett?

  In what way?

• 1:44:27Dr. Will Bulsiewicz?

  We were talking a moment ago about the autonomic nervous system, which is sympathetic versus parasympathetic. We live our lives on sympathetic overdrive, which basically is the equivalent of constantly feeling threatened. Right? Heart rate, heart rate pumping, blood pressure up, more focused. But then you suffer the consequences within your gut. The gut gets sacrificed when we are activating our sympathetic nervous system.

• 1:44:56Dr. Will Bulsiewicz?

  We don't do enough to do the opposite, which is the parasympathetic nervous system, which is what happens when we slow down.

• 1:45:04Dr. Will Bulsiewicz?

  Conversations, holding hands, hugs, prayer, journaling, meditation, sauna, that's parasympathetic. Okay, so to the trauma question. It's been shown that, and this is something that I had to learn not only myself, but I had to see that.

• 1:45:28Dr. Will Bulsiewicz?

  I always thought that kids, if they were young enough, they wouldn't remember. And what I've realized is actually this idea of like, the body keeps the score is so well said. It's so true. The body does keep the score. You can have trauma that occurs before the age of two. There's no way you remember that. And yet it will manifest later on in adults. And this has been shown actually in kids that are adopted. And like have an unstable first two years of life. They are more likely to suffer with health related issues later on. This, this issue of trauma, what happens is that it restructures the brain and how your brain functions.

• 1:46:12Steven Bartlett?

  And it keeps you sort of trapped in that fight or flight state.

• 1:46:15Dr. Will Bulsiewicz?

  Keeps you trapped, yeah. So there's a part of our brain called the amygdala. And the amygdala is what gets activated if you like, uh, go to a haunted house. You know, like if you get scared of something, right? Or like, uh, it's the middle of the night and you hear something creepy in the bushes and you're not sure what's going on. Okay, so that's the activation of your amygdala. Well, the, the issue for people that suffer from trauma is that they live with the amygdala perpetually turned on.

• 1:46:44Steven Bartlett?

  So if something's happened to me in my life that's caused some form of trauma, there's an increased probability that I'm going to be in a more sympathetic state in terms of my nervous system, which is going to activate a hormone, which is then going to disrupt my gut motility and all the other things we talked about.

• 1:47:03Steven Bartlett?

  Like the gut barrier and other dysfunction across the gut. What is the link there? Is it, is it the hormone that's produced when I'm in that stress state that is impacting my immune system, which is then having the impact on my gut?

• 1:47:17Dr. Will Bulsiewicz?

  Yeah, so this is all a manifestation of the brain, of the brain gut connection. So the.

• 1:47:25Dr. Will Bulsiewicz?

  What's happening is that your brain has the ability to release a hormone, corticotropin-releasing hormone, CRH. And CRH is the, that's effectively your sympathetic nervous system getting activated, turned on.

• 1:47:42Dr. Will Bulsiewicz?

  In a person who's had trauma, and to be clear, like, not everything that's bad is trauma, right? It's possible to have things that are bad, that are not actual trauma. Trauma is the thing that sticks with you. It's, it's when you have something occur that overwhelms your ability to cope with it. And so, and then it has this lasting effect.

• 1:48:02Steven Bartlett?

  I was thinking, as you're speaking about some of my friends that have had some bad diagnoses recently. Got a friend that got diagnosed with something very, very serious. And what I then noticed is after that diagnosis, they had lots of other health-related issues that seemed to be unconnected. But the doctors associated with stress. And maybe the traumatic news of that one thing has caused this cascade of other issues downstream.

• 1:48:25Dr. Will Bulsiewicz?

  Yeah, 100%. And, and that's all a manifestation of the, of the brain-gut axis. So the brain-gut axis is how we think about the brain being connected to our gut and how they're in communication with one another. And within that context, the brain releases this hormone, the CRH corticotropin-releasing hormone, that has an effect throughout the entire body. It puts them on edge. And the consequence is that that CRH, that's like, um, so, this is a bit nuanced, but let me clarify something about cortisol.

• 1:48:57Dr. Will Bulsiewicz?

  Cortisol is the morning hormone. When you get that spike in the morning, it's perfect. It's exactly what your body needs. What you don't need is you don't need cortisol to still be elevated at 10 o'clock, 11 o'clock, midnight, 1:00 in the morning. Cortisol is the get-up-and-go hormone. Right? Now it's disrupting your sleep. Now it's actually the adversary of your of your circadian rhythm. And that's what's happening in these people is that through that the brain gut access, they're activating the cortisol and the cortisol then disrupts their gut barrier and leads to inflammation.

• 1:49:32Steven Bartlett?

  Where does healing from that trauma start in your view? If a patient were to come to you.

• 1:49:37Dr. Will Bulsiewicz?

  Yeah.

• 1:49:38Steven Bartlett?

  And they were, they had loads of complications with their gut.

• 1:49:41Dr. Will Bulsiewicz?

  Yeah.

• 1:49:42Steven Bartlett?

  But you were able to identify that trauma was playing a role.

• 1:49:45Dr. Will Bulsiewicz?

  Yep.

• 1:49:45Steven Bartlett?

  Where would you start with with their healing journey?

• 1:49:47Dr. Will Bulsiewicz?

  The most important thing is to is to, and I think this is the the moment that will be most impactful for some of the listeners, not all, but some. The most important thing is to understand that the trauma is the root of the issue. Because most people, the way that we react to trauma, it's the part that we don't want to talk about. Right? So we push it into the corner and we pretend that it's not there. We're not like, we know it's there, but we're not going to even look at it. And so the solution is to accept and acknowledge that the trauma is the root of the problem. Because then you need to actually turn towards it. And that's under professional, that's with professional help. So there's different things that you can do, different approaches, including cognitive behavioral therapy.

• 1:50:32Dr. Will Bulsiewicz?

  They're all administered by trained health professionals. That's not what I do. But step one is the acknowledgement and understanding that's the problem.

• 1:50:40Steven Bartlett?

  You remember last time we made lots of different shapes of poop? I think we were using, what's the Bristol stool? There we go.

• 1:50:48Dr. Will Bulsiewicz?

  Yeah.

• 1:50:49Steven Bartlett?

  We have this Bristol stool thing here, which is the different types of poop that people produce. And on this table, I think we have a variety of different styles. Just to remind me once again, if I was guessing, I would assume that maybe this one is healthy or this one?

• 1:51:08Dr. Will Bulsiewicz?

  Yeah.

• 1:51:09Steven Bartlett?

  Which one is healthy?

• 1:51:11Dr. Will Bulsiewicz?

  The chocolate bar is your is your, so this sweet chocolate bar right here is your glorious Bristol four.

• 1:51:19Steven Bartlett?

  It's a Bristol.

• 1:51:20Dr. Will Bulsiewicz?

  Right, a Bristol four. So the Bristol stool scale is seven unique types of poop. And you can tell by looking in the toilet bowl, we have been told, don't look, there's nothing to see there. But what I'm saying is, and we discussed this, that 60% of the weight of your stool is your microbiome. That's the microbiome story right there in the toilet bowl. And so the Bristol four is the normal bowel movement. And it should be, it shouldn't be a rectangle, but it's soft, but formed like a sausage.

• 1:51:55Steven Bartlett?

  And the word Bristol is coming from this thing called the Bristol stool chart?

• 1:52:00Dr. Will Bulsiewicz?

  Yeah, so the Bristol stool chart actually comes from Bristol in the UK, right, the city of Bristol, where they did a study in the early 90s. And what came of that study was the discovery of these seven unique stool types. So, and four is normal, and three, many people would consider normal, three is just sort of lumpy bumpy like this. But, and many people would consider that to be normal. But type one and two are constipation. And types six and six and seven are diarrhea. Now, what's interesting is that the Bristol

• 1:52:38Dr. Will Bulsiewicz?

  study was one location in the UK, 2,000 people. Actually, at Zoe, we did a nationwide survey in the UK, and we had 140,000 people tell us about their poop. So, we actually have, we're working on publishing the papers that came from this. But we have the largest survey on bowel habits that's ever been done in the world.

• 1:53:02Steven Bartlett?

  And how many people's poop is healthy?

• 1:53:04Dr. Will Bulsiewicz?

  Well, based upon this, actually, it was interesting because the results were about what you expect. There's a disproportionate number of people that are struggling with bowel related issues. So it's probably about 40% of people that are struggling with bowel related issues.

• 1:53:18Steven Bartlett?

  Of all the different types of poop one could have, is there any that I should be most concerned about?

• 1:53:24Dr. Will Bulsiewicz?

  If you have these like

• 1:53:25Steven Bartlett?

  Little pellets.

• 1:53:27Dr. Will Bulsiewicz?

  Rabbit pellets. That's severe constipation.

• 1:53:31Steven Bartlett?

  And is that a lack of something, a lack of fiber?

• 1:53:33Dr. Will Bulsiewicz?

  It can be a lack of fiber for sure.

• 1:53:35Steven Bartlett?

  Okay.

• 1:53:35Dr. Will Bulsiewicz?

  But sometimes it's a stool softening issue too. So like for people that have severe constipation, fiber is more nuanced than than people are willing to discuss on social media. Everyone makes it sound like the simple solution is just increase your fiber. It's not necessarily that simple. So sometimes you have to add magnesium. Magnesium supplements are great with fiber.

• 1:53:58Steven Bartlett?

  What do they do?

• 1:53:59Dr. Will Bulsiewicz?

  So they help to draw water into the intestine. And that water softens up the stool. So if you have the fiber for the form and you have the magnesium to make it soft, this is how you get a soft formed bowel movement. We talked a moment ago about taking a nighttime magnesium supplement. Okay. If your goal is to sleep or to relax, magnesium glycinate is a phenomenal choice. But if you're constipated, that's not going to do anything. So don't, don't do that. For constipation, magnesium oxide is the one that I would typically go with. But there's also magnesium sulfate and magnesium citrate. Those are the choices.

• 1:54:38Steven Bartlett?

  Okay.

• 1:54:38Dr. Will Bulsiewicz?

  Yeah, and if you get to a Bristol seven, which is just.

• 1:54:42Steven Bartlett?

  Like diarrhea, I'm sorry.

• 1:54:43Dr. Will Bulsiewicz?

  That's just, yeah, it's just liquid. You're not in a good place. And so obviously that needs to be addressed as well and be aware of what we talked about earlier, which is that there are some people who suffer from chronic constipation. And then they start having diarrhea and actually that's overflow.

• 1:55:01Steven Bartlett?

  Dr. Will, what's the most important thing we haven't talked about? As it relates to all that is in your new book, that you think we should have talked about? I mean, we've probably covered a tiny, tiny, tiny fraction of all the things in there, but it gives people a flavor. Is there one other thing that you think is the most important thing that we haven't talked about?

• 1:55:18Dr. Will Bulsiewicz?

  Here's what I really feel compelled to say, to be totally honest with you. You're holding the book. The book is called Plant Powered Plus. I don't want people to be intimidated by the title of my book. Let me explain this. I believe that there are many paths to healing. There are many different dietary patterns. The one that's gonna work the best for you is the one that you're actually willing to do. Right, so this book is not about a one size fits all approach, nor is it 100% plants. That's not what the book is about. So instead, the conversation and what we haven't discussed is what's missing in our diet that we really need? And we've kind of started to touch on this. I've identified four things.

• 1:56:02Dr. Will Bulsiewicz?

  And these four things you find in all of the healthy dietary patterns. So whether it's Mediterranean, pescatarian, flexitarian, if you do it right, you're gonna have these four things. Number one, fiber. Number two, polyphenols. Number three, healthy fat. So healthy fat is the extra virgin olive oil. Healthy fat is this avocado right here. Healthy fat are these seeds and nuts right here. Okay, they all have healthy fat. And in whole form, you should consume these whole form foods without restriction. If you are obese and you're trying to lose weight,

• 1:56:44Dr. Will Bulsiewicz?

  the problem with any oil, not just not just seed oils, also including extra virgin olive oil, is that this is the highest calorie thing that exists on the entire planet. You cannot create something with a higher calorie content than oil. So it's not to your advantage to really focus on oil. If anything, you should be limiting your oil intake. But these healthy fats, the mono- and cetrye fats that you get from nuts, from avocado, if we had fish, like a salmon or shellfish, the omega threes that you get from those things, there's tremendous benefit to those healthy fats.

• 1:57:21Steven Bartlett?

  That was the third one?

• 1:57:22Dr. Will Bulsiewicz?

  And then the fourth is fermented food.

• 1:57:24Steven Bartlett?

  Okay.

• 1:57:25Dr. Will Bulsiewicz?

  So which we don't actually see, we kind of see here, we got the pickles. All right, we got some pickles here. But the thing about fermented food is most of us are not eating fermented food. So the average intake of fermented food in the United States is zero. And if any, maybe once in a while yogurt, that's it. We have tons of choices that are available to us. And the key that people need to know is a Stanford study done by some of my friends, Christopher Gardner and Justin and Eric Asanenberg.

• 1:57:59Dr. Will Bulsiewicz?

  And what they showed is that in just eight weeks, by adding fermented food to their diet, people could increase the diversity of their gut microbiome. That means a healthier gut. And they lowered inflammation. So as the gut gets healthier, inflammation goes down. And they did that just by adding fermented food. So Steve, these four things, fiber, 95% of Americans are deficient. Polyphenols, almost no one is getting the recommended amount of fruits and vegetables. Healthy fats, we're not opting for the types of fats that we're talking about right now. I want people to get more omega threes and more mono and saturated fat. And finally, fermented food, no one's really consuming. If you think about your diet, this shouldn't be an exercise

• 1:58:42Dr. Will Bulsiewicz?

  in more of the thing that you already have. This should be an exercise of what is the thing that's missing that we could add that could transform our health? Because that's the real opportunity. So that's what the nutrition program is about.

• 1:58:55Steven Bartlett?

  When I look at this photo of you before and after, I think this one's probably during medical school, was it? Or just after medical school?

• 1:59:03Dr. Will Bulsiewicz?

  No, so that's in my early 30s on the left.

• 1:59:06Steven Bartlett?

  And then this photo here, which I'll put up on the screen, is you at what age?

• 1:59:11Dr. Will Bulsiewicz?

  Yeah, about 40.

• 1:59:12Steven Bartlett?

  Okay, well, 10 years has passed and you look 10 years younger.

• 1:59:15Dr. Will Bulsiewicz?

  Yeah.

• 1:59:16Steven Bartlett?

  And you look pretty ripped.

• 1:59:17Dr. Will Bulsiewicz?

  Yeah.

• 1:59:18Steven Bartlett?

  What changed in your life between these two photos? What was different in one's mind? Knowledge, mentality, psychology, what was different?

• 1:59:28Dr. Will Bulsiewicz?

  So the easy answer is I changed my diet. I changed my lifestyle. I grew up eating junk food. I grew up eating fast food. We celebrated that sort of diet. And I shifted towards eating the way that I'm describing to you today. Right? I obviously started going to the gym and working out. I think everyone should be going to the gym and working out. I don't think that's to be underestimated. That's an important part of the program that I'm proposing for people. Right? So there's those things. But the part that you don't get on the surface, that I don't really talk about that much, is I also need to heal on the inside. So I was in a dark place. And I wasn't in a dark place just because of my diet. There were issues that existed within our family.

• 2:00:13Dr. Will Bulsiewicz?

  I had issues with my dad. And I needed to resolve those. And what happens, a few things. One, literally, an angel came into my life. That's my wife. Right? She came into my life in 2012. And she never pushed anything on me. But just seeing her and having her as a presence in my life was what I really needed to change myself in terms of my diet, in terms of my lifestyle, but also to pick up the phone and call my dad, who I didn't talk to in 10 years.

• 2:00:47Steven Bartlett?

  You'd fallen out?

• 2:00:48Dr. Will Bulsiewicz?

  Totally fallen out.

• 2:00:50Dr. Will Bulsiewicz?

  And there's an entire story that goes into that. And I have to own my own mistakes. Because I'm as guilty as anyone for the issues that existed between us. But I picked up the phone and I called him. And the other thing that happened in my life that really changed everything was the birth of my daughter. So my oldest, I have four kids, my oldest is now 11.

• 2:01:17Dr. Will Bulsiewicz?

  And when you hold that child in your hands,

• 2:01:21Dr. Will Bulsiewicz?

  you're a different person instantly. And I can't describe this to a person, to someone who's never experienced this, but you have a purpose that you didn't have prior to that day. You've experienced love that you never understood. And the love that I had for my daughter helped me to understand the love that my own dad had for me. But I could never accept that. And so the complexity of it all is, yes, I changed my diet, my lifestyle, yes, I started working out. But I also needed to forgive my dad for the things that happened when I was a kid.

• 2:01:59Dr. Will Bulsiewicz?

  And reconnecting with my dad was actually one of the most important and powerful things that happened for me.

• 2:02:04Steven Bartlett?

  He was vacant? He was absent? Or was it something?

• 2:02:07Dr. Will Bulsiewicz?

  No. My, when I, so this is something that, um, chapter eight of my new book, to me, it's my masterpiece.

• 2:02:18Dr. Will Bulsiewicz?

  Of all the chapters, this is my third book, of all the chapters I've written, it's the one that I'm most proud of by far. And if you, if people get the audiobook, they're gonna hear it in my voice. So there were some things that I needed to talk about. And you'll find them in that chapter. And basically, the story is that our family, we went through a really hard time. And my parents got divorced. And I was seven, and I was the oldest of three boys. It was not a nice divorce. And when it happens, you feel like you have to choose a side. And from my perspective, again, like, you know, I was a kid.

• 2:03:04Dr. Will Bulsiewicz?

  But there was a part of me that said,

• 2:03:11Dr. Will Bulsiewicz?

  Dad,

• 2:03:14Dr. Will Bulsiewicz?

  you're a man.

• 2:03:17Dr. Will Bulsiewicz?

  Why did you allow this to happen?

• 2:03:21Dr. Will Bulsiewicz?

  Why did you allow this to happen to our family? Why didn't you fix this? And eventually, I stopped talking to him. And that was around the time that I graduated from college.

• 2:03:35Dr. Will Bulsiewicz?

  And so for 10 years, I was,

• 2:03:42Dr. Will Bulsiewicz?

  like, I went to medical school at Georgetown. I went to Northwestern. I was the chief medical resident there. I won the highest award in my residency class. I was fully accomplished. I was like accomplishing everything. I was very, very sad inside. And what was missing was my dad. And I needed him there. And so having my daughter and feeling the love that I felt instantly from my daughter helped me to understand the love that my dad had for me. And ultimately, what I realized, Steve, is that, because

• 2:04:20Dr. Will Bulsiewicz?

  the thing you have to know that's hard to explain in short order is that we had two brothers. My dad used to take us camping. Three boys, no one else, just him.

• 2:04:35Dr. Will Bulsiewicz?

  He'd take us camping all the time. He took us on vacation all the time. If there was a sporting event, he was always there. Right, but I wasn't able to see that all of that was really an act of love. And now having kids myself and understanding how hard it is to be a parent and raise these kids. The idea of taking three boys camping by yourself is insane to me. I now understand how hard my dad was trying.

• 2:05:02Steven Bartlett?

  And in your book published in, um, 2020, I believe, 2020, you, you wrote this for him. Could you read that in your own voice? Cause I was gonna read it, but it's very personal. You wrote this in the front of the book.

• 2:05:15Dr. Will Bulsiewicz?

  Yeah, I lost my dad during the preparation of this book. It was sudden and completely unexpected. I couldn't wait to share this book with him. It would have been easy to just send an electronic copy, but I really wanted his first read to be a physical book with the hard cover, all the pages and his son's name on the front. Over the past few months, my dad repeatedly told me how proud he was of me. He told me that my grandparents, John and Helen Bolsowitz, would have been so proud of the work I was doing in the name of our family. I can't tell you how much it means to me that he said all that. It breaks my heart that he's not here anymore.

• 2:05:58Dr. Will Bulsiewicz?

  I am who I am because of him. But I will forever be grateful for the special times that we shared. Love you, Dad. We'll always be thinking of you. This book is for you.

• 2:06:21Steven Bartlett?

  You know, we're all susceptible for letting a relationship sour and then losing a lot of time. And I think that's why your story is so inspiring because it reminds us that, I guess what matters most in the end, and sometimes we can lose, I don't know, decades, years because of grudges or because of misunderstandings that have never been addressed. So, I mean, it's a huge compliment to your wife that she had the wherewithal to try and get you guys to reconnect so that you could reform that relationship before he did pass away. And I'm no doubt that he was, would be incredibly proud if it's, if he was watching over us now and had seen what's happened in the, in the last five years in your life because it's been incredible, absolutely incredible.

• 2:07:01Dr. Will Bulsiewicz?

  Healing comes in many forms. And sometimes it's the changes that we make to our diet.

• 2:07:08Dr. Will Bulsiewicz?

  And sometimes it's the changes we make in our relationships with other people.

• 2:07:14Dr. Will Bulsiewicz?

  There's different opportunities you and I talked about, like, what is the thing? For every person, it's something different.

• 2:07:20Steven Bartlett?

  And it's funny how they're both extricably linked. Because when one gets right with themselves and others, they often find it much easier to get control of their diet and their lifestyle.

• 2:07:31Dr. Will Bulsiewicz?

  And then it all clicks.

• 2:07:33Steven Bartlett?

  I highly recommend everybody goes and gets this book. It's um, it's going to be published in the US here on the thirteenth of January and in the UK on the fifteenth.

• 2:07:40Dr. Will Bulsiewicz?

  That's right, yeah, Tuesday in the US, Thursday in the UK.

• 2:07:43Steven Bartlett?

  So I'm going to link it below. Um, we just touched on a fraction of it. We haven't gone into much of the details, but if you are someone that is struggling with your gut, you know, one of the sixty one percent or seventy percent of people that told me ahead of this conversation that you were, I highly recommend this book because it's incredibly accessible in the way that it's written, but also it's incredibly comprehensive and up to date. And as you said, the science on the gut and all of the related gut related sort of issues and symptoms that we have is always evolving. So I, I love having these conversations. It's almost refreshers and updates to me because every single time I learn something new and I get more of the sort of jigsaw puzzle of my gut health. And as it relates to like my brain and my immune system filled in and it's having, it's

• 2:08:26Steven Bartlett?

  really remarkable how much of a real world impact these conversations have had on me. I don't think people know this enough, but they often ask me like, which conversations had an impact on you? The way that I view it is it's almost, it is like a jigsaw puzzle and each conversation is adding a piece. And I can see since we had that last conversation about poop and the gut and the microbiome and all those things, there's been radical changes I've made to my life that have had a radical impact. It's like the lights have been turned on and that's a really good example of what this book does when you read it. It turns on the lights. So highly recommend people go check it out. You are launching a YouTube channel, you said?

• 2:08:56Dr. Will Bulsiewicz?

  Yeah, I'm launching a, I'm launching a YouTube channel. It's um, the gut health MD and that's also my social hashtag or my social handle. So you can find me on those locations, but my home base is my website, theguthealthmd.com. And if you come there, I highly encourage people. To register for my email newsletter because it's a completely free resource, basically a Substack for free. That's designed, this is where I love to like really have these conversations with people about, hey, there's this new study, let's talk about it. Hey, there's this thing that I'm seeing, let's talk about it, right? Hey, this is what I'm doing right now, right? So it's it's an opportunity for sharing. That goes beyond like the limitations of social.

• 2:09:35Steven Bartlett?

  I'll link all of that below, everything we've mentioned in the last thirty seconds, so everyone can check you out. We do have a closing tradition where the last guest leaves a question for the next, and the question that has been left for you is, what is one thing you could do today to help rectify your life's biggest regret?

• 2:09:55Dr. Will Bulsiewicz?

  Isn't that funny?

• 2:10:01Dr. Will Bulsiewicz?

  Well, I think that the good news, this is to me, if anything, a story of of hope and optimism. Because

• 2:10:12Dr. Will Bulsiewicz?

  on many levels I did.

• 2:10:15Dr. Will Bulsiewicz?

  So reconnecting with my dad was key. But I think that the other piece is when you when you lose a person, the way that we lost my dad, he's gone, right? And it happened real fast and I didn't get to say goodbye.

• 2:10:28Dr. Will Bulsiewicz?

  I will say it's my faith that allows me to know, like not to pretend to know, to actually know that these things that I need to say to him that I never actually got a chance to say, that I wish I did.

• 2:10:47Dr. Will Bulsiewicz?

  I'll have a chance to do that. And I look forward to the day when I see him again.

• 2:10:53Steven Bartlett?

  What would you say?

• 2:10:56Dr. Will Bulsiewicz?

  I would tell him that I hate the fact that it took me so long to figure out that he was a great dad.

• 2:11:06Dr. Will Bulsiewicz?

  And, you know, adults may have conflict, that's what the divorce was.

• 2:11:13Dr. Will Bulsiewicz?

  But he was a phenomenal dad and I didn't see that or get that until I had my own kids.

• 2:11:22Steven Bartlett?

  Dr Will. Thank you.