#324 ‒ Metabolism, energy balance, and aging: How diet, calorie restriction, and macronutrients influence longevity and metabolic health | Eric Ravussin, Ph.D.
Release Date: 11/04/2024
#339 - Unpacking trauma: How early wounds shape behavior and the path toward healing | Jeff English
The Peter Attia Drive
Jeff English is a trauma-focused clinical counselor with extensive experience working with adults, teens, families, and groups across various settings, including career counseling, life coaching, addiction recovery, professional workshops, and private practice. In this episode, Jeff shares insights from his work as a trauma therapist, exploring how moments of perceived helplessness shape behaviors and how adaptive strategies can become maladaptive over time. He discusses the concept of the “trauma tree,” examining its roots (causes) and branches (consequences), and highlights a powerful...
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#338 ‒ Peter’s takeaways on aerobic exercise and VO2 max, insulin resistance, rising healthcare costs, treating children with autism and ADHD, and strength training | Quarterly Podcast Summary #4
The Peter Attia Drive
In this quarterly podcast summary (QPS) episode, Peter summarizes his biggest takeaways from the last three months of guest interviews on the podcast. Peter shares key insights from his discussions on diverse topics such as aerobic efficiency and VO2 max with Olav Aleksander Bu; insulin resistance with Ralph DeFronzo; economics of the US healthcare system and cost-saving strategies with Saum Sutaria; diagnosis and treatment of autism, ADHD, and anxiety in children with Trenna Sutcliffe; and strength training with Mike Israetel. Additionally, Peter shares any personal behavioral adjustments...
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#337 - Insulin resistance masterclass: The full body impact of metabolic dysfunction and prevention, diagnosis, and treatment | Ralph DeFronzo, M.D.
The Peter Attia Drive
Ralph DeFronzo is a distinguished diabetes researcher and clinician whose groundbreaking work on insulin resistance has reshaped the understanding and treatment of type 2 diabetes. In this episode, Ralph shares insights from his five decades of research, including his pivotal role in bringing metformin to the U.S. and developing SGLT2 inhibitors. Ralph explores the impacts of insulin resistance on specific organs, the pharmacologic interventions available, and the gold-standard euglycemic clamp method for measuring insulin resistance. This episode is a masterclass in the pathophysiology and...
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#336 - AMA #68: Fasting, well-balanced diets, alcohol, exercise for busy people, wearables, emotional health, assessing cardiovascular health, and more
The Peter Attia Drive
In this “Ask Me Anything” (AMA) episode, Peter tackles a diverse set of listener-submitted questions, covering a wide range of health and performance topics. He dives into assessing cardiovascular health, discussing key biomarkers and risk factors, and breaks down various fasting approaches, including time-restricted eating and prolonged fasting. The conversation also explores the impact of alcohol on health and disease risk, fundamental principles of nutrition, and optimal protein intake. Additionally, he examines the pros and cons of ketogenic and low-carb diets, strategies for...
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#335 ‒ The science of resistance training, building muscle, and anabolic steroid use in bodybuilding | Mike Israetel, Ph.D.
The Peter Attia Drive
Mike Israetel is a sports physiologist, competitive bodybuilder, and co-founder of Renaissance Periodization, where he coaches athletes and professionals in diet and weight training. In this episode, Mike shares his journey from powerlifting to academia, breaking down the core principles of resistance training, including exercise selection, volume, intensity, and frequency. He debunks common misconceptions about strength training, explains how to structure an effective program for beginners and advanced lifters, and provides candid insights into his experience with anabolic steroids,...
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#334 - Cardiovascular disease, the number one killer: development, biomarkers, apoB, cholesterol, brain health, and more | Tom Dayspring, M.D.
The Peter Attia Drive
Tom Dayspring is a world-renowned expert in clinical lipidology and a previous guest on The Drive. In this episode, Tom explores the foundations of atherosclerosis and why atherosclerotic cardiovascular disease (ASCVD) is the leading cause of death worldwide for both men and women. He examines how the disease develops from a pathological perspective and discusses key risk factors, including often-overlooked contributors such as insulin resistance and chronic kidney disease. He breaks down the complexities of cholesterol and lipoproteins—including LDL, VLDL, IDL, and HDL—with an in-depth...
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#333 ‒ Longevity roundtable — the science of aging, geroprotective molecules, lifestyle interventions, challenges in research, and more | Steven Austad, Matt Kaeberlein, Richard Miller
The Peter Attia Drive
In this special episode of The Drive, Peter introduces a brand-new roundtable format. Joined by three renowned experts in longevity science—Steven Austad, Richard Miller, and Matt Kaeberlein—the group explores the rapidly evolving field of geroscience. Together, they dive deep into topics like the relationship between healthspan and lifespan, evaluating interventions like rapamycin and senolytics, the role of epigenetic changes in aging, and whether GLP-1 receptor agonists hold geroprotective potential. They also tackle major challenges in funding and public acceptance of longevity...
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#332 - AMA #67: Microplastics, PFAS, and phthalates: understanding health risks and a framework for minimizing exposure and mitigating risk
The Peter Attia Drive
In this “Ask Me Anything” (AMA) episode, Peter tackles a topic that's been dominating headlines and sparking widespread concern: microplastics and plastic-associated chemicals, including BPA, PFAS, and phthalates. Peter explores the science behind these substances including how and why they've become so prevalent, the extent of our exposure, and the potential risks to our health. Most importantly, he provides a practical framework for understanding microplastics and plastic-associated chemicals and minimizing exposure while distinguishing genuine risks from exaggerated concerns. If...
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#331 ‒ Optimizing endurance performance: metrics, nutrition, lactate, and more insights from elite performers | Olav Aleksander Bu (Pt. 2)
The Peter Attia Drive
Olav Aleksander Bu is an internationally renowned sports scientist acclaimed for his coaching prowess with elite athletes spanning a diverse range of sports disciplines. In this episode, Olav returns to dive deeper into his groundbreaking work as an endurance coach, exercise scientist, engineer, and physiologist. The discussion explores his data-driven approach to coaching, unpacking key performance metrics like functional threshold power, VO2 max, and lactate threshold, while emphasizing the importance of consistent testing protocols. Olav shares insights on how training methodologies...
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#330 – Autism, ADHD, and Anxiety: Understanding the rise in autism and a multidisciplinary approach to diagnosis and treatment of each condition in children | Trenna Sutcliffe, M.D.
The Peter Attia Drive
Trenna Sutcliffe is a developmental behavioral pediatrician and the founder and medical director of the Sutcliffe Clinic in the San Francisco Bay Area, where she partners with families to provide care for children facing behavioral challenges, developmental differences, and school struggles. In this episode, Trenna shares her journey into developmental and behavioral pediatrics, including her pioneering work at Stanford and her expertise in autism, ADHD, and anxiety—the "three As." She explores the diagnostic processes, the overlap and comorbidities of these conditions, and the importance...
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Eric Ravussin is a world-renowned expert on obesity, metabolism, and aging whose pioneering research has shaped much of what we understand today about energy balance and caloric restriction. In this episode, Eric shares insights from his cutting-edge work on energy expenditure—a critical factor in understanding how our bodies regulate weight and appetite. He discusses methods for measuring energy output, energy balance, food intake, and appetite regulation, and explores key studies on macronutrient manipulation. Eric then delves into the CALERIE study on caloric restriction, highlighting insights related to biomarkers of both primary and secondary aging. The conversation also covers the potential of GLP-1 agonists to replicate these effects and looks ahead to how AI and technology could transform metabolic research in the coming years.
We discuss:
- Eric’s background and current work metabolism and measuring energy expenditure [3:00];
- The science behind metabolic chambers for measuring energy expenditure, and the complexities of indirect and direct calorimetry [8:00];
- The body's regulatory systems for maintaining energy balance and the primary influence of energy intake on body weight [18:30];
- The epidemic of obesity and a discussion of resting metabolic rate [24:45];
- The impact of exercise, appetite, gut hormones, and eating patterns on weight regulation [28:45];
- Experiments looking at how macronutrient composition affects energy expenditure [38:45];
- The challenges of studying diet in real-life settings, the potential of personalized nutrition, and how public health policy could play a role in guiding nutritional habits [51:00];
- The importance of protein in the diet, the limitations of dietary data collection, and how AI could potentially transform nutrition science [1:08:15];
- How Eric’s interest in caloric restriction (CR) began with Biosphere 2, metabolic efficiency's role in aging, and goals of the CALERIE study [1:15:15];
- The CALERIE study: exploring the real-world impact of caloric restriction [1:28:00];
- Notable findings from the CALERIE study after two years: sustained weight loss, participant retention, and more [1:40:00];
- The effect of caloric restriction on the hallmarks of aging [1:47:00];
- The challenge of applying CR to the general population, the potential of drugs and exercise to mimic the effects of CR [1:55:45];
- Upcoming study comparing caloric restriction to time-restricting eating, and Peter’s takeaways from the discussion [2:02:45]; and
- More.
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