#368 ‒ The protein debate: optimal intake, limitations of the RDA, whether high-protein intake is harmful, and how to think about processed foods | David Allison, Ph.D.

Hey, everyone. Welcome to the Drive podcast. I'm your host, Peter Attia. This podcast, my website, and my weekly newsletter all focus on the goal of translating the science of longevity into something accessible for everyone. Our goal is to provide the best content in health and wellness, and we've established a great team of analysts to make this happen. It is extremely important to me to provide all of this content without relying on paid ads. To do this, our work is made entirely possible by our members. And in return, we offer exclusive member only content and benefits above and beyond what is available for free. If you want to take your knowledge of this space to the next level, it's our goal to ensure members get back much more than the price of the subscription. If you want to learn more about the benefits of our premium membership, head over to peteratiamd.com forward slash subscribe. My guest this week is David Allison. David, returning for his third conversation on the drive, is a world renowned scientist and award winning scientific writer who has been at the forefront of obesity research for the last twenty years and is currently the director of the Children's Nutrition Research Center at Baylor College of Medicine. I wanted to have David on because protein has become one of the most contentious and confusing topics in nutrition today. What was once a fairly straightforward subject has now turned into a debate full of conflicting claims, dogma, unnecessary controversy, and a whole lot of name calling. David brings both a deep understanding of the science and a clear eyed perspective on how to separate evidence from opinion. This is part one of a two part deep dive on protein and next week I'll be joined by Rhonda Patrick for part two, after which we'll put this protein discussion to rest once and for all. In this episode, we discuss the historical cycle of demonizing macronutrients and why protein has recently become the focus, the origins and limitations for the RDA for protein, and what the evidence suggests about optimal intake for health, longevity, and performance conflicts of interest in nutrition science and why transparency around data, methods, and logic matter much more than funding sources The challenges of conducting high quality nutrition studies, including the debate over crossover designs, the limits of epidemiology, and the underfunding of rigorous trials compared to pharmaceutical trials. What the evidence really says about higher protein intake, muscle protein synthesis, and whether concerns about harm are supported by actual data. How to think about processed and ultra processed foods including definitions, heuristics, and the question of whether they're inherently harmful or simply a convenient villain. And finally, the difficulty of tackling obesity through public health, the limits of current approaches, and whether future solutions may rely more on drugs like GLP-one agonists or broader societal changes. So without further delay, please enjoy my conversation with David Allison. Hey, David. …