
Invest Like the Best with Patrick O'Shaughnessy
Hosted by Patrick O'Shaughnessy
Written by a model from the transcript; not yet reviewed.
This episode explores the current state of medicine, focusing on a shift from reactive treatments to proactive health management through a concept called the health stack. The guest, a prominent biotech investor, details major breakthroughs in pharmaceuticals including GLP-1 medicines, PCSK9 cholesterol drugs, and advancements in early cancer screening and artificial intelligence. Throughout the conversation, the discussion highlights how these scientific developments are creating a trillion-dollar opportunity to reduce global healthcare spend while dramatically extending human healthspan.
The episode opens with a series of product advertisements followed by the host’s welcome and explanation of the show’s purpose.
Patrick O’Neal introduces himself and outlines the episode’s focus on the trillion‑dollar health revolution.
Patrick introduces Alex Karnal, a leading bio and healthcare investor, and previews the topics to be covered.
Alex describes the current landscape of medicine, highlighting the excitement around GLP‑1 therapies and the potential for a health revolution.
The conversation turns to the concept of a health stack—offensive and defensive layers that can extend life expectancy.
The discussion shifts to PCSK9 inhibitors, their genetic basis, and their potential to dramatically lower cardiovascular risk.
Patrick and Alex summarize the key insights, emphasizing the transformative potential of the health stack and the need for actionable strategies.
The episode opens with host introductions and a series of sponsor advertisements.
Exploration of simple blood tests and the emerging multi‑cancer early detection market.
Analysis of how artificial intelligence can shorten the drug development cycle and generate novel targets.
Examination of grassroots experimentation with peptides and its impact on drug development timelines.
The guest recounts his upbringing, education, and career path leading to his role at Deerfield Management.
State of the Union in Medicineinsight
The guest discusses 2025 as the most exciting year in his biotech career, driven by GLP-1 adoption and the commercial proof that we are entering a trillion-dollar healthcare revolution.
Defining the Health Stackstrategy
The defensive health stack relies on five core dimensions: lipid optimization, cardiometabolic health, neurocognitive health, inflammatory health, and blood pressure control.
PCSK9 Cholesterol Reductiondata
Inspired by human genetics where a rare mutation prevents PCSK9 production, these drugs achieve an eighty-eight percent reduction in cardiovascular disease risk.
Blood-Based Screening Advancementsinsight
Liquid biopsies and blood tests for early cancer detection are inflecting because they eliminate the friction and low compliance rates of traditional diagnostic methods.
AI in Drug Discoverystrategy
Artificial intelligence enables researchers to move from model to molecule in a fraction of the time, bypassing traditional slow and labor-intensive screening screens.
Citizen Pharmacology and Peptidesinsight
A grassroots movement of individuals experimenting with peptides highlights a generational shift toward taking personal ownership of health and longevity.
“I would say that 2025 was probably the single most exciting year in my entire journey.”
“protecting our kidneys, and soon we're going to see the opportunity to protect us from developing addictions to alcohol and drugs.”
“What gets me fired up is that it's actually the first commercial proof that we are ready for what I think we're going to look back on in time as a once in a lifetime trillion dollar revolution in all of public health.”
“What a health stack looks like has a couple of different elements to it. It has elements of offense and defense.”
“about where we're going with our health, they will undoubtedly add an extra decade of life to our expected lifespan and have the potential to take curves that have been dead flat for decades and drive one of the first inflections ever.”
“I think we're going to wake up within the next five years with really awesome multi-cancer early detection tests.”
“First of all, what are the two key ingredients for discovery to happen?”
“And I think we're finding that across lots of different cancers, there's opportunities to have amazing results.”
“I think that the next best in class version of that is colonoscopy married with either a blood test or a stool-based test with some regular periodicity to it.”
My guest today is Alex Karnal. Alex is the co-founder and managing partner of Braidwell, a life sciences investment firm he built after spending 15 years at Deerfield Management. The frame we use throughout the episode is the health stack. Alex talks about how most of the diseases that will claim most of our lives are already addressable with medicines that exist today. We work through the five layers of what a defensive health strategy looks like, why GLP-1 medicines represent the first commercial proof that people are ready to be proactive about their health, and why PCSK9 inhibitors may ultimately be the more important drug class even though they get far less attention. We also get into the science and business of drug discovery itself — why most of the published literature that AI companies are training on cannot be replicated, what it would mean to have a truly agentic scientific lab running 24 hours a day, and why Alex believes we are now on a deterministic curve toward scientific superintelligence in biology. For the full show notes, transcript, and links to mentioned content, check out the episode page here. ----- Become a Colossus member to get our quarterly print magazine and private audio experience, including exclusive profiles and early access to select episodes. Subscribe at colossus.com/subscribe. ----- Ramp’s mission is to help companies manage their spend in a way that reduces expenses and frees up time for teams to work on more valuable projects. Go to ramp.com/invest to sign up for free and get a $250 welcome bonus. ----- Trusted by thousands of businesses, Vanta continuously monitors your security posture and streamlines audits so you can win enterprise deals and build customer trust without the traditional overhead. Visit vanta.com/invest. ----- WorkOS is a developer platform that enables SaaS companies to quickly add enterprise features to their applications. Visit WorkOS.com to transform your application into an enterprise-ready solution in minutes, not months. ----- Rogo is the AI platform for finance. They're building agents for Wall Street that are trained to understand how bankers and investors actually do work: from diligence and modeling, to turning analysis into deliverables. To learn more, visit rogo.ai/invest. ----- Ridgeline has built a complete, real-time, modern operating system for investment managers. It handles trading, portfolio management, compliance, customer reporting, and much more through an all-in-one real-time cloud platform. Visit ridgelineapps.com. ----- Editing and post-production work for this episode was provided by The Podcast Consultant (https://thepodcastconsultant.com). Timestamps: (00:00:00) Welcome to Invest Like the Best (00:02:29) Intro: Alex Karnal (00:03:15) State of the Union: GLP1s and Life Sciences (00:07:01) The Health Stack Framework (00:12:49) Breaking Down the 5 Defensive Layers (00:21:18) GLP-1: What's Driving the Inflection (00:28:28) Diet vs. Drugs: Is Food Enough? (00:31:15) Barriers to Access: Complexity, Cost & Compliance (00:35:04) PCSK9: The Closest Thing to a Free Lunch (00:44:10) Alzheimer's & Neurodegenerative Disease (00:46:59) Cancer: Early Detection & New Treatments (00:54:49) Body Imaging & Diagnostic Trade-offs (00:56:31) How Drugs Are Discovered (01:02:39) AI in Drug Discovery (01:10:57) The Automated Lab of the Future (01:13:05) Peptides & Citizen Pharmacology (01:16:45) Alex's Background (01:28:25) Braidwell's Investment Approach (01:30:39) The Kindest Thing
17,504 words · 3 speakers
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