The Mind-Gut Conversation Podcast

Emeran Mayer, MD

The Mind-Gut Conversation brings in experts within various fields of health & science to have a discussion with world-renowned gastroenterologist, neuroscientist and bestselling author of The Mind Gut Connection, Emeran Mayer, MD.

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#125
September 1 · 7 min
What Is The Mayer Model? with Emeran Mayer, MD | MGC Ep. 125
After 45 years of research on how the brain and the gut communicate, the question Dr. Emeran Mayer hears most often is not about mechanisms or studies. It is much simpler than that. People tell him they understand the science, they just do not know how to live it. In this episode of The Mind-Gut Conversation, Dr. Mayer introduces The Mayer Model, the book he has been working toward for his entire career. He explains why his earlier books, The Mind-Gut Connection and The Gut-Immune Connection, focused on explaining the biology, and why this one is built to close the gap between the evidence and the ordinary decisions people make every day about food, stress, sleep, movement, and recovery. He traces the long view of how the idea of a bidirectional brain-gut conversation went from a fringe interest to one of the most active areas in biomedical research, and how the discovery of the gut microbiome as a third participant reorganized the entire model. Food is not simply fuel. It is information that trillions of microbes transform into signals that reach every organ, including the brain. The Mayer Model is not a diet and not a protocol. It is a systems-based way of understanding your own biology clearly enough to make better decisions inside it. Across seven chapters, the book covers the role of diet in shaping the brain-gut-microbiome system, gut-healthy recipes, and detailed guidance on building a gut-healthy lifestyle through movement, sleep, contemplative practices, and vagal stimulation. Dr. Mayer also shares who he wrote the book for, and how listeners can access a set of launch-window bonuses, including a live Q&A over Zoom, a guided meditation, a recipe guide, and a Mayer Nutrition coupon. The Mayer Model is available now on Amazon: https://a.co/d/0bkjOcxP Launch bonuses: https://themayermodel.com/ Topics discussed include: • Why understanding gut science is not the same as applying it • How brain-gut research moved from the fringe to the mainstream • The gut microbiome as the third participant in the brain-gut conversation • What The Mayer Model is, and what it is not • What is inside the seven chapters of the book • Who the book is for, and how to claim the launch bonuses This episode is brought to you by Mayer Nutrition. We believe real food comes first. A diverse, plant-forward diet is the foundation of a healthy brain-gut-microbiome system, and everything we make is designed to support that foundation rather than replace it. When you want extra support, Mayer Nutrition offers science-informed products like Synaptic Bloom and our proprietary extra virgin olive oil. Use code MINDGUT for 10% off your first order at www.mayernutrition.com Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ Chapters: 0:00 - Introduction 1:04 - The Long View: 45 Years of Brain-Gut Research 2:12 - The Third Participant: The Gut Microbiome 3:15 - From Explanation to Application 4:03 - What Is The Mayer Model? 5:25 - Who This Book Is For 6:12 - How to Get the Book and Launch Bonuses
#124
August 18 · 12 min
Why Are We Living Longer But Not Healthier? with Emeran Mayer, MD | MGC Ep. 124
Modern medicine has never been better at keeping people alive. So why are we spending more of our lives unwell? In this episode of The Mind-Gut Conversation, Dr. Emeran Mayer examines a new analysis from the Global Burden of Disease project, published in Lancet Public Health, comparing how long people live with how many of those years are lived in good health across 204 countries and territories. The difference between those two numbers is called the morbidity gap. In 1990 the average person could expect to spend 8.8 years of life in poor health. By 2023 that had risen to 10.7 years, and the gap widened in 203 of the 204 places studied. The wealthiest countries fare worst of all, with the United States leading globally at 14 years. Dr. Mayer explains what is actually driving those unhealthy years, why the trend now extends across the entire adult lifespan rather than clustering in old age, and why two of the largest contributors sit squarely within the brain-gut-microbiome system. Topics discussed include: • What the morbidity gap is and how it is measured • Why the 45-year-old compression of morbidity hypothesis is being challenged • Why high-income countries carry the largest health gaps • The five conditions responsible for most unhealthy years worldwide • Why health decline is starting in middle age • The gender health paradox • Why years lived may be the wrong scoreboard This is a science-driven discussion for anyone interested in healthspan, healthy aging, and chronic disease prevention. --------------------------- This episode is sponsored by Mayer Nutrition. Food comes first, always. For the places where diet leaves a gap, use code MINDGUT for 10% off your first order. --------------------------- Chapters: 0:00 - Introduction 1:00 - What This Study Set Out to Test 2:23 - The Morbidity Gap Explained 3:35 - Why Wealthy Countries Rank Worst 5:05 - Health Decline in Middle Age 6:10 - What Fills the Unhealthy Years 7:28 - Men, Women, and the Health Gap 8:31 - Rethinking How We Measure Success 9:39 - Closing Thoughts 11:25 - A Word From Our Sponsor
S1 · E123
August 4 · 56 min
Psychedelics for IBS: Inside the First Clinical Trial with Erin Mauney, MD
For most of the last forty years, irritable bowel syndrome was treated as a problem of the gut alone. The idea that the brain plays a central role took decades to gain acceptance, and it remains contested today. In this episode of The Mind-Gut Conversation, Dr. Mayer is joined by Dr. Erin Mauney, a pediatric gastroenterologist and researcher at Harvard and Massachusetts General Hospital, who has completed one of the first clinical trials of psilocybin-assisted therapy for patients with treatment-resistant IBS. They discuss why a compound acting primarily on the brain might change how the gut is experienced, what happens when the brain’s prediction machinery becomes locked into a cycle of pain and anticipation, and why the therapy surrounding the dosing sessions may matter as much as the molecule itself. The conversation also takes on the harder questions. How do you run a placebo-controlled trial when every participant knows they received the drug? Can the psychedelic experience be engineered out of psychedelic medicine, and what is lost if it is? And what can practices used ritually for millennia still teach a reductionist Western model of care? This is early-stage science, and Dr. Mauney is refreshingly clear about the limits of what is currently known. It is also a glimpse at what the next chapter of brain-gut medicine might look like. Topics discussed include: • Why IBS is best understood as a disorder of gut-brain interaction • How the brain’s predictive coding can become locked into chronic pain • What psilocybin-assisted therapy actually involves, session by session • Whether the psychedelic experience itself is essential to the benefit • The placebo problem in psychedelic trials, and why it may be unsolvable • How long the benefits appear to last after treatment ends • Where psychedelic research in gastroenterology may be headed This is a careful, evidence-based conversation for anyone interested in IBS, chronic pain, and the future of brain-gut medicine. Chapters: 0:00 - Introduction 3:23 - IBS as a Brain-Gut Disorder 7:40 - Entering Psychedelic Research 13:22 - How Psilocybin Could Affect the Gut 15:43 - Inside the Trial 17:50 - The Brain and Pain Prediction 21:18 - Side Effects and Patient Experience 25:40 - Does the Psychedelic Experience Matter? 29:57 - Ritual and Western Medicine 32:15 - The Placebo Question 36:33 - Combining Therapies 39:10 - Brain Imaging 40:56 - Practical Challenges 44:07 - Durability of Benefits 47:23 - Overlap With Other Conditions 49:28 - Where the Research Goes Next 54:11 - Looking Ahead
#122
July 23 · 56 min
Does Your Daily Probiotic Actually Work, or Is It Just Hype? with Kiran Krishnan, PhD | MGC Ep. 122
Millions of people take a daily probiotic without ever asking a basic question: does any of it survive long enough to do anything? In this episode of The Mind-Gut Conversation, Dr. Mayer is joined by Kiran Krishnan, a research microbiologist and Chief Scientific Officer at Microbiome Labs who has spent his career studying the human microbiome and the science behind probiotics. Kiran is best known for popularizing spore-based probiotics and for his work on metabolic endotoxemia, the mechanism behind what many people call leaky gut. The conversation opens with a hard look at what happens to probiotics in the stomach. Kiran describes testing 40 of the leading probiotic brands under standard gastric conditions and finding that none of the strains survived the passage intact. From there they examine why CFU counts have become the industry's main marketing lever despite telling consumers almost nothing, why multi-strain formulas can cause individual strains to cancel each other out, and why some probiotic strains may trigger an inflammatory response rather than calm one. They also address one of the most persistent myths in the field, the idea that probiotics colonize the gut and reseed the microbiome. Kiran explains why nearly all probiotics, including spores, are transient, and what that means for how these products should actually be evaluated. The second half turns to the missing microbes hypothesis: the argument that modern agriculture has stripped soil-derived spore-forming bacteria out of our food supply, along with the tilling, monocropping, and synthetic fertilizer practices driving that loss. Dr. Mayer and Kiran connect the health of the soil to the health of the gut, and close with practical guidance on how an ordinary consumer can evaluate a probiotic in an unregulated market. Topics discussed include: Why most probiotics do not survive stomach acid What CFU counts really tell you, and what they do not Why multi-strain formulas can work against themselves The myth of probiotic colonization and reseeding the microbiome How modern agriculture changed the soil microbiome How to evaluate a probiotic before you buy it This is a candid, evidence-based conversation for anyone interested in gut health, the microbiome, and separating probiotic science from probiotic marketing. -------------------------------------------------------------------- This episode is brought to you by Mayer Nutrition. Use code MINDGUT to save 10% on your first order of Synaptic Bloom. -------------------------------------------------------------------- Chapters: 0:00 - Introduction 2:23 - The Missing Microbes Hypothesis and the Role of Spores 11:51 - Why Most Probiotics Don't Survive the Stomach 20:24 - The Problem With Multi-Strain Formulas 27:41 - How Modern Agriculture Changed Our Soil 43:14 - Colonization, Survival, and What the Evidence Shows 50:03 - How to Choose a Probiotic That Actually Works
July 9 · 15 min
What We Get Wrong About Menopause: Hormones & The Gut Microbiome with Emeran Mayer, MD | MGC Ep. 121
Menopause isn't just hot flashes — it's brain fog, bone loss, sleep, mood, and your gut. In this solo episode of The Mind-Gut Conversation, Dr. Emeran Mayer unpacks the ~34 symptoms of perimenopause and menopause, the 2002 hormone-therapy scare that still shapes care today, and what current science says about estrogen and HRT. Then he turns to the part almost no one is talking about: the estrobolome — the gut microbes that recycle estrogen as part of the brain-gut microbiome system. It may explain why symptom severity varies so widely between women, and why fiber, phytoestrogens, soy isoflavones, and equol point toward a new generation of non-hormonal menopause treatments. A myth-busting, hopeful look at what we get wrong about menopause — and the science finally setting it right. Key Topics Covered: The ~34 symptoms of perimenopause and menopause The 2002 WHI study and the hormone-therapy backlash What current science says about estrogen, HRT, and vaginal estrogen The estrobolome and how the gut recycles estrogen Phytoestrogens, equol, and fiber as non-hormonal levers Why there's real reason for hope Chapters: 0:00 – How many symptoms does menopause really have? 2:21 – Why menopause care was abandoned for a generation 4:40 – The 2002 scare & what we know now about hormone therapy 7:05 – The estrobolome: how your gut recycles estrogen 7:50 – A non-hormonal approach: phytoestrogens & Dr. David Meriwether's research 10:25 – Fiber, ultra-processed foods & the probiotic myth 11:45 – The reframe & the equity gap in menopause care 14:05 – Reasons for hope Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X: https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/
#120
June 23 · 23 min
Is Soil Health the Missing Piece of Human Health? with Sadhguru | MGC Ep. 120
This episode is brought to you by Mayer Nutrition. Use code MINDGUT at checkout to save 10% on your first order of our polyphenol blend, Synaptic Bloom, at https://www.mayernutrition.com. The health of our soil and the health of our gut may be expressions of the same crisis — and healing one may depend on healing the other. In this episode of The Mind–Gut Conversation, Dr. Mayer continues his conversation with Sadhguru, recorded at the Isha Foundation in Tennessee, turning from consciousness and inner intelligence to the ground beneath us — quite literally. Sadhguru has spent years leading the Save Soil movement, one of the most far-reaching environmental campaigns in recent history, reaching nearly four billion people in a hundred days. In this conversation, they explore why the collapse of microbial life in our soil, the chlorination of our water supply, and the devitalization of our food may be driving a slow, generational deterioration in human health — one that science is only beginning to measure. Sadhguru argues that the soil crisis and the gut health crisis are not separate problems, but deeply intertwined expressions of the same disconnect from the living systems that sustain us. Dr. Mayer traces how that impoverishment travels from the earth to the root, to the gut, to the brain. Topics discussed include: Why soil degradation and gut health are part of the same crisis How the loss of microbial life in soil, water, and food affects human biology The gut-soil continuum and what ancient yogic science understood about the microbiome Whether the Save Soil movement can outpace the speed of environmental decline Why Sadhguru believes science and spirituality are searching for the same truth What it means to live at full capacity — from microbe to human being Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X: https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ Chapters: 0:00 - Introduction 1:45 - Is the Save Soil Movement Enough to Turn the Tide? 5:30 - Human Well-Being Is What's in Peril 9:00 - The Gut-Soil Continuum 13:00 - What Ancient Yogic Science Knew About Microbial Life 16:30 - Chlorinated Water, Devitalized Food, and Generational Health 19:30 - You Are a Walking Lump of Soil 22:00 - Where Science and Spirituality Meet
#119
June 9 · 26 min
What Science Gets Wrong About Intelligence with Sadhguru | MGC Ep. 119
Neuroscience is built on an assumption most scientists never examine: that the brain is the seat of consciousness, intelligence, and everything that makes us human. Sadhguru thinks that’s like a child staring at a phone while a sunset unfolds right in front of them. In this episode of The Mind-Gut Conversation, Dr. Emeran Mayer sits down with Sadhguru — yogi, mystic, and founder of the Isha Foundation — for a conversation recorded at the Isha Foundation’s retreat center in Tennessee. Sadhguru draws a sharp distinction between intellect — the data-gathering, pattern-finding capacity that AI now replicates — and intelligence, which he sees as something far more fundamental, distributed across all living systems from microbes to complex organisms. He argues that consciousness is not a product of the brain, but something far wider, and that our current scientific frameworks are designed for manipulation of the world rather than understanding of it. Topics discussed include: • Why the brain may be evolution’s newest gadget, not its crowning achievement • Intelligence vs. intellect: what the distinction reveals • The phenomenal intelligence of microbes and living systems • Why AI leads to more certainty, not more understanding • Memory as a boundary and the concept of Samskara • What consciousness actually means when used precisely Dr. Mayer engages critically throughout, bringing a scientist’s perspective and pushing back where he sees tension with evidence from his own decades of research. The result is a rare, unscripted exchange across very different worldviews — science, mysticism, and the gut microbiome all at the table. -------------------------------------------------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ -------------------------------------------------------------------- Chapters: 0:00 – Introduction 1:26 – Does the Brain Deserve Its Central Role? 6:14 – Intelligence vs. Intellect 10:49 – AI, Data, and the Limits of the Analytical Mind 15:39 – What Is Consciousness, Really? 22:25 – Memory, Samskara, and the Boundaries of Perception
#117
May 27 · 6 min
What Overwork Actually Does To Your Body with Dr. Emeran Mayer | MGC Ep. 118
Most of us know overwork isn't good for us. But the research on just how damaging it can be, and how quietly the damage accumulates, is more sobering than most people realize. In this episode of The Mind–Gut Conversation, Dr. Emeran Mayer reflects on his own experience of sustained overwork throughout his career. We're talking 80-hour weeks, chronic sleep disruption, borderline hypertension, and eventually atrial fibrillation. He also digs into what the science says about why this pattern is so common and so easy to miss. Drawing on findings from the World Health Organization, the Cleveland Clinic, and Harvard Business Review, he explores the biological and behavioral mechanisms through which chronic overwork damages the body over time, identifies six key warning signs that your work-life balance is already off, and makes a practical case for reconnecting with physical signals that most of us have learned to override. Topics discussed include: Why working more than 54 hours a week is linked to measurable increases in stroke and heart disease risk What allostatic load is and how chronic stress accumulates invisibly Six red flags that signal your work-life balance is off Dr. Mayer's personal experience with atrial fibrillation and what prompted a rethink The role of mindfulness, movement, and nature in nervous system recovery Why your body keeps the score, even when you're not paying attention This is a candid, evidence-based episode for anyone who has normalized pushing through exhaustion and wonders what it may be costing them. Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X: https://x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ Chapters: 0:00 – Introduction 0:35 – The Science of Overwork 1:06 – Dr. Mayer's Personal Experience 3:00 – Six Warning Signs 4:55 – Reconnecting with Your Body
May 12 · 46 min
What if Consciousness Starts in Your Gut, Not Your Brain? with Michael Pollan | MGC Ep. 117
Consciousness is one of science's deepest mysteries — and it may be under threat. In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Michael Pollan, author and one of our most important thinkers on the relationship between humans and the natural world, to discuss consciousness, the subject of Michael's latest book. They explore what consciousness actually is, how it differs from sentience and intelligence, and why the gut operates with remarkable sophistication outside conscious awareness. Michael explains how his lifelong interest in plants, food, and psychedelics eventually led him to confront fundamental questions about awareness — including why humans seem evolutionarily driven to alter their consciousness despite the obvious risks. But the conversation takes a contemporary turn when Michael describes his growing concern that technology platforms — social media, smartphones, AI chatbots — are eroding human consciousness by keeping us in a state of minimal awareness for hours each day. He argues that corporations are monetizing our headspace, fragmenting our attention, and undermining our ability to think independently and connect authentically. Michael also discusses his personal meditation practice and why caring for consciousness is not about withdrawing from the world, but strengthening our capacity to engage with it responsibly. This episode offers an essential, wide-ranging exploration of consciousness, attention, the brain-gut connection, and what it means to be fully human in an age of unprecedented distraction. Topics discussed include: • What consciousness is and how it differs from sentience • Why the gut's intelligence operates outside awareness • How plants and animals co-evolve with humans • Why humans seek altered states of consciousness • The relationship between interoception and consciousness • How technology threatens human awareness and attention • Why meditation strengthens engagement with the world This is a thought-provoking discussion for anyone interested in consciousness, the mind-body connection, and preserving human awareness in a distracted world. ————————————————————————————— Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X: https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ ————————————————————————————— Chapters: 0:00 - Introduction 2:48 - From Gardens to Consciousness: Michael's Journey 6:08 - Do Plants Manipulate Humans? 8:27 - Sentience vs. Consciousness 13:32 - Why Humans Alter Consciousness 18:36 - The Brain-Gut Connection and Consciousness 25:42 - What Is Consciousness Really For? 33:06 - Different Forms of Consciousness in Nature 40:20 - Is Consciousness Under Threat from Technology? 43:51 - Defending Consciousness in an Age of Distraction 45:41 - Michael's Personal Meditation Practice 46:21 - Closing Remarks
S1 · E116
April 28 · 49 min
What 99% of Fiber Supplements Get Wrong with Jens Walter, PhD | MGC Ep. 116
For decades, fiber was shorthand for digestiveregularity. Today, the science tells a more complex and far more interesting story. In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Professor Jens Walter, a leading microbiome scientist at University College Cork in Ireland, to discuss one of nutrition’s most surprising findings: fiber supplements don’t work like whole foods. Prof. Walter’s research reveals a striking paradox. In clinical trials, fiber supplements consistently show minimal or negative results. But when his team studied a non-industrialized diet rich in whole grains, legumes, fruits, and vegetables — mirroring ancestral eating patterns with around 45 grams of fiber daily — the metabolic and immune effects were profound. The difference isn’t just about fiber content. It’s about food structure. Prof. Walter explains how intrinsic fiber — thethree-dimensional architecture of plant cell walls — traps nutrients, slows digestion, and fundamentally changes how the body processes food. He also explores emerging mechanisms like pH lowering, which reduces carcinogenic metabolites in the gut, and the often-overlooked role of eating speed in metabolic health. This conversation challenges widely held assumptions aboutsupplements, processed foods, and what it actually takes to eat well. Prof. Walter also addresses common questions: Does cooking destroy fiber? What about low-fiber diets like the Inuit tradition? And why do we keep hearing that healthy food is bland? This episode offers a grounded, evidence-based look at howtraditional diets — cooked, flavorful, and built on whole foods — can fundamentally change metabolism and immune function in short periods of time. Topics discussed include: • Why fiber supplements fail where whole foods succeed • What intrinsic fiber is and why food structure matters • How pH lowering in the gut reduces carcinogenic metabolites • The role of eating speed and satiety in metabolic health • What the Inuit and Mediterranean populations reveal about diet diversity • Ultra-processed foods vs. whole food diets • How cooking affects fiber, polyphenols, and nutrient content • Why the magnitude of diet’s effects on health “can’t be overstated” This is a practical, science-driven discussion for anyone interested in nutrition, gut health, microbiome science, and chronic disease prevention. Chapters: 0:00 - Introduction 3:05 - The Fiber Paradox: Supplements vs. Whole Foods 7:37 - What Is Intrinsic Fiber? 10:23 - Traditional Diets: Inuit, Mediterranean, and Longevity 15:49 - Food Diversity and Fiber Combinations 21:18 - Is There an Ancestral Human Diet? 28:38 - Can We Engineer Healthier Processed Foods? 32:03 - Adding Fiber to Modern Foods 36:31 - The Critical Role of Eating Speed 43:54 - Does Cooking Destroy Fiber? 47:07 - Why Healthy Eating Isn't Bland
#115
April 14 · 46 min
Joint Health, Mobility, and the Mind-Body Connection with Jeff Bailey | MGC Ep. 115
Joint pain and limited mobility are often treated as inevitable parts of aging — but what if there's a fundamentally different way to think about joint health? In this episode of The Mind–Gut Conversation, Dr. Mayer sits down with Jeff Bailey, founder of Avita Yoga and author of the bestselling book Mobility for Life, to explore a revolutionary approach to restoring joint health through yoga. Unlike conventional methods that emphasize stretching and flexibility, Jeff's practice focuses on compression, fascial reorganization, and the body's natural capacity for healing. They discuss why protecting your joints may actually accelerate their decline, how injuries can become doorways to deeper understanding, and the critical connection between mind and body in the healing process. Jeff also shares his personal journey — from assisting his veterinarian father as a child to recovering from a severe ski injury at age 50 — and how these experiences shaped his understanding of what joints actually need to thrive. This episode offers a practical, evidence-based perspective on joint health, chronic pain, and how to maintain mobility and independence throughout life. Topics discussed include: Why joints need compression, not stretching The role of fascia in structural health The mind-body connection in healing Reframing injury as opportunity Practical approaches to maintaining lifelong mobility This is a grounded, practical conversation for anyone dealing with joint pain, arthritis, or interested in maintaining lifelong mobility.
#114
March 31 · 9 min
The Truth About Peptides with Dr. Emeran Mayer | MGC Ep. 114
Peptides are everywhere right now — on social media, in wellness clinics, and in the claims of biohackers promising faster healing, sharper thinking, and slower aging. But how much of this is science, and how much is hype? In this episode of The Mind-Gut Conversation, Dr. Emeran Mayer draws on decades of peptide research — including his early work on gut peptides at UCLA — to explore what these molecules actually are, how they work, and why the gap between promising lab results and proven human medicine is so often overlooked. From insulin and GLP-1 to BPC-157 and beyond, Dr. Mayer examines why some peptides have transformed modern medicine after decades of rigorous research, while others promoted online today exist in a scientific gray zone — lacking human trials, standardized dosing, and long-term safety data. This episode offers a grounded, evidence-based framework for thinking critically about peptide claims, and a reminder that the most powerful tools for health may not be the most exciting ones. Topics discussed include: What peptides are and how the body already uses them Why some peptides have transformed medicine — and how long it actually took The science and limitations behind popular peptides like BPC-157 Why what works in animals doesn't always work in humans The risks of unregulated peptide use and compounding pharmacies Where legitimate peptide research is headed This is a thoughtful, science-driven discussion for anyone navigating the growing world of peptide therapy and longevity medicine. ---------------------------------------------------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.x.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ ---------------------------------------------------------------------- Chapters: 0:00 - Introduction 0:42 - What Are Peptides? 2:25 - How Peptides Already Transform Medicine 3:30 - The New Wave of Unproven Peptides 4:42 - Why Scientists Are Cautious 7:02 - Peptides Worth Watching 7:45 - The Bigger Pattern in Wellness Culture 8:30 - Closing Thoughts
S1 · E113
March 17 · 49 min
How To Actually Feed Your Gut Microbiome with Anu Simh | MGC Ep. 113
Eating for your microbiome doesn't have to be complicated — but it does require rethinking how we approach food, carbohydrates, and flavor. In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Anu Simh, a board-certified functional health coach, microbiome educator, and author of Flourish from Within: New Gut for Lifelong Health. Anu's work bridges the gap between microbiome science and real-world application, offering a framework for eating that supports microbial diversity without rigid meal plans or overwhelming recipes. They explore why diversity matters more than any single superfood, how to distinguish beneficial complex carbohydrates from refined ones, and why traditional cuisines — like Anu's South Indian roots — have been quietly aligned with microbiome science all along. The conversation also covers the role of herbs and spices as important sources of polyphenols, how to retrain your palate to accept bitter flavors, and how to build simple, repeatable eating patterns that actually stick in people's lives. This episode offers a grounded, science-based look at what it means to feed your microbiome, and how to translate research into sustainable habits that support gut health and long-term well-being. Topics discussed include: • Why microbial diversity is more important than any single superfood • How traditional cuisines align with microbiome science • The difference between refined and complex carbohydrates • Herbs and spices as polyphenol-rich additions to everyday meals • Retraining your palate to accept bitter and diverse flavors • Building simple, repeatable eating patterns for gut health This is a practical, science-driven discussion for anyone interested in the gut microbiome, plant-forward eating, and the brain–gut connection. Chapters: 0:00 - Introduction 2:36 - Anu's Origin Story and Journey to Microbiome Science 8:46 - Has Plant-Forward Eating Reached the General Public? 25:08 - The Flourish Diet 34:54 - Herbs, Spices, and Retraining Your Plate 45:07 - Closing Remarks and Practical Recipes
March 5 · 42 min
The Truth About Fiber And Your Gut Health with Matt Amicucci, PhD | MGC Ep. 112
Fiber has been talked about for decades — but emerging research suggests most of us still don't understand what it actually does, how much we need, or why the modern diet has left us so dramatically short of it. In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Dr. Matt Amicucci, food scientist and co-founder of OneBio, to discuss the cutting-edge science of dietary fiber and its far-reaching role in gut health, metabolism, and disease prevention. Dr. Amicucci explains how different fiber structures interact with specific microbial communities in the gut to produce short-chain fatty acids like butyrate — and how those molecules influence everything from blood glucose regulation to GLP-1 secretion to long-term mortality risk. He also shares the story behind Glycopedia, the largest dietary fiber database ever built, and how it is being used to develop a new generation of personalized, microbiome-targeted nutrition. They also discuss why 95% of Americans fall short of even the minimum recommended fiber intake, how decades of food processing have systematically stripped fiber from the diet, and what it will take to close that gap. This is a practical, science-driven discussion for anyone interested in nutrition, the gut microbiome, and the future of food. -------------------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.twitter.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ -------------------------------------- Chapters: 0:00 - Introduction 2:38 - Matt's Origin Story: From Chef to Food Scientist 6:43 - Why Fiber Is Having a Moment 8:58 - The Fiber Deficit Crisis 11:36 - What Decades of Low Fiber Intake Has Done to the Microbiome 13:47 - Building Glycopedia: Mapping the World's Fibers 19:33 - Why Whole Foods Alone Aren't Enough 21:42 - Not All Fiber Is Created Equal 25:47 - Introducing GoodVice 27:34 - The Health Case for 10 More Grams a Day 33:49 - Rethinking Sugar and Fiber Together 36:34 - Fiber, Butyrate, and GLP-1 38:42 - The Future of Personalized Fiber Nutrition 40:17 - What's Next for OneBio
S1 · E111
February 17 · 38 min
Chronic Pain, Brain Health, and the Power of Self Help with Jared Katz | MGC Ep. 111
Chronic pain is often treated as a problem to suppress with medication or surgery, but what if it’s actually a signal from a complex system that needs to be addressed holistically? In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Jared E. Katz, author of Retrain the Brain: Self-Help for Traumatic Brain Injury and creator of the pain management app Painless. Jared’s story begins more than twenty years ago, when a traumatic brain injury left him with cognitive impairment and two rare, painful conditions: Chiari malformation and syringomyelia. Rather than accepting a life defined by pain, Jared spent years quietly experimenting with how he eats,sleeps, moves, and thinks. He developed what he calls a “brain health algorithm” — a set of daily practices spanning nutrition, cognitive activity, movement, sleep, and social engagement. The result is not just a book, but a blueprint for anyone living with chronic pain or seeking to understand whatbrain health truly looks like in practice. This episode is slightly different from our usual focus on the gut microbiome, but the principles align closely with the holistic, systems-based thinking Dr. Mayer teaches. Jared’s experience demonstrates that the brain is not a machine with one broken part — it’s a dynamic, interconnected system capable of adaptation and healing when given the right conditions. Topics discussed include: • What a “brain health lifestyle” actually involves • How anti-inflammatory nutrition and eating patterns affectpain and cognition • Why chronic pain requires addressing multiple systems, notjust one symptom • How cognitive exercises like writing can help rewire thebrain • The future of personalized pain management This is a practical, deeply human conversation for anyoneinterested in chronic pain, brain health, and the power of self-directed healing. Chapters: 0:00 - Introduction 6:04 - Jared's Story: The Injury & Living With Chronic Pain 11:30 - Nutrition, Diet & the WAH Principle 16:57 - The Painless App & the Future of Pain Management 22:30 - The Five Pillars of a Brain Health Lifestyle 27:48 - Resilience, Recovery & the Gut-Brain Connection 35:11 - Psychedelics, Neuroplasticity & Closing Thoughts
S1 · E110
February 3 · 42 min
How The Gut Microbiome Influences Estrogen After Menopause with David Meriwether, PhD | MGC Ep. 110
Menopause is often described as a simple decline in estrogen production, but emerging microbiome research suggests the story is far more complex. In this episode of The Mind–Gut Conversation, Dr. Mayer is joined by Dr. David Meriwether, a scientist at UCLA’s Goodman Luskin Microbiome Center, to discuss the estrobolome — a specialized group of gut microbes that recycle and reactivate estrogen after it has been excreted by the body. They explore how gut microbes may contribute to circulating estrogen levels even after menopause, why menopausal symptoms vary so widely among women, and how changes in the microbiome may create feedback loops that influence symptom severity. The discussion also places this research in the broader context of recent findings published in Nature linking the gut microbiome to health, aging, and disease. This episode offers an in-depth, evidence-based look at a new biological framework for understanding menopause, and the potential for future non-hormonal strategies rooted in the brain–gut–microbiome system. Topics discussed include: • What the estrobolome is and why it matters • How gut microbes recycle estrogen after menopause • Why some women experience fewer menopausal symptoms than others • The interaction between the gut, hormones, and aging • Where microbiome-based therapies for menopause may be headed This is a practical, science-driven discussion for anyone interested in women’s health, menopause, and the evolving role of the gut microbiome. You can support & learn more about Dr. Meriwether's work here: https://themeriwetherlab.com/ ------------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.twitter.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/
S1 · E109
January 21 · 49 min
What a 34,000-Person Study Reveals About a "Healthy" Gut with Tim Spector, MD | MGC Ep. 109
In this episode of The Mind–Gut Conversation, Dr. Emeran Mayer sits down with Tim Spector, MD, to discuss the implications of a landmark gut microbiome study involving more than 34,000 participants — one of the largest and most comprehensive efforts to date to understand what a “healthy” gut microbiome actually looks like. Drawing from the study’s novel design and findings, they explore why defining gut health is far more complex than identifying a short list of “good” or “bad” microbes. The conversation unpacks what large-scale microbiome data can, and cannot tell us about health, disease prevention, and the growing interest in microbiome testing as a tool for personalized nutrition and healthcare. Together, they examine the deep connections between diet and the microbiome, highlighting why dietary patterns, particularly fiber- and prebiotic-rich foods, may play a more meaningful role than many commonly marketed probiotic products. They also discuss the challenges of translating microbiome research into actionable guidance for consumers and clinicians, and why education and context are essential as microbiome testing becomes more widely available. This wide-ranging discussion blends cutting-edge microbiome science with practical insight, offering a grounded perspective on where the field is headed and how emerging research may eventually shape everyday health decisions. Topics discussed include: • What a large-scale microbiome study reveals about gut health • Why defining a “healthy” microbiome is more complex than expected • The limitations of labeling microbes as simply good or bad • The role of diet, fiber, and prebiotics in shaping the microbiome • The promises and pitfalls of microbiome testing • How microbiome research may influence future healthcare practices This is a practical, evidence-based discussion for anyone interested in gut health, whether navigating dietary choices personally, exploring microbiome testing, or working in a clinical or research setting. Please leave any comments or feedback on the episode — we’d love to hear your thoughts. ------------------------------- Chapters: 00:00 Introduction 02:05 The Landmark Study Overview 05:29 Defining Healthy Gut Microbiomes 10:02 The Good vs. Bad Microbes 13:59 Implications for Diet and Health 18:37 The Role of Prebiotics and Probiotics 23:27 Future Directions in Microbiome Research 27:49 Challenges in Proving Causality 31:51 The Future of Gut Health Testing 36:36 Future Outlook in Traditional Medicine 40:10 Microbiome Testing in Clinical Practice 43:20 Regulation, Wellness, and Medical Use 46:10 Personalizing Diet Through the Microbiome 48:50 Final Reflections
S1 · E108
January 7 · 1 hr 14 min
Why Modern Life is Keeping Our Immune System Switched On with Will Bulsiewicz, MD | MGC Ep. 108
In this episode of The Mind–Gut Conversation, Dr. Emeran Mayer sits down with Will Bulsiewicz, board-certified gastroenterologist, New York Times bestselling author, and one of today’s leading voices in microbiome science. Drawing from his newest book, Plant-Powered Plus, Dr. Bulsiewicz explores why chronic, low-grade immune activation has become so widespread—and how modern lifestyles are keeping our immune system permanently switched on. Together, they examine the deep connections between diet, the microbiome, the immune system, and inflammation, unpacking how evolutionary mismatches, ultra-processed foods, low fiber intake, chronic stress, and social disconnection are reshaping human health. The conversation moves beyond symptoms to address root causes, highlighting why restoring health requires rethinking how we eat, live, and connect. This wide-ranging discussion blends cutting-edge science with clinical insight, offering a grounded, practical perspective on how small, sustainable changes can meaningfully reduce inflammation and support long-term well-being. Topics discussed include: • What inflammation really is—and why it’s no longer just an acute response • How the gut microbiome and immune system interact • The role of fiber, polyphenols, and microbial metabolites in regulating inflammation • Why modern environments clash with human biology • How lifestyle factors like stress, loneliness, and purpose influence immune health This is a practical, evidence-based discussion for anyone seeking to understand how modern lifestyle factors shape immune health, inflammation, and long-term well-being. Please leave any comments or feedback on the episode — we’d love to hear your thoughts. ---------------------------- This episode is brought to you by Mayer Nutrition. If you are interested in trying Synaptic Bloom, our high-potency Quercetin + supporting polyphenols blend, you can visit mayernutrition.com, and use our exclusive podcast discount code: MINDGUT for 10% off your first order! ---------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.twitter.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ ---------------------------- Chapters: 0:00 – Introduction 3:00 – Purpose, Medicine, and the Evolution of Gut Health 7:00 – What Inflammation Really Is 12:30 – Modern Life and the Immune System 18:00 – The Gut Microbiome and Immune Activation 26:00 – Diet, Fiber, and Microbial Health 38:21 – Mayer Nutrition 40:15 – Lifestyle, Stress, and Social Connection 49:00 – Technology, Medicine, and the Future of Health 1:05:00 – Practical Takeaways and Closing Reflections
S1 · E107
Dec 23, 2025 · 46 min
What Modern Medicine Gets Wrong About Gut Health with Lauren DeDecker, MD | MGC Ep. 107
In this episode of The Mind-Gut Conversation, Dr. Emeran Mayer sits down with Dr. Lauren DeDecker, a board-certified internal medicine physician with training in nutrition and integrative medicine, to explain how gut health is approached in real-world primary care. They discuss why fiber and plant diversity remain foundational for digestive and metabolic health, how microbiome research reshaped modern medicine, and why popular diet trends often miss the bigger picture. The conversation also covers SIBO, common gut-related diagnoses, and how GLP-1 medications are changing what we understand about appetite, inflammation, and metabolism. Key Topics Covered: • Gut health and the brain-gut-microbiome system • Fiber, fermented foods, and microbiome diversity • SIBO, overdiagnosis, and gut symptoms • Popular diets: carnivore, keto, Mediterranean • GLP-1 medications, appetite regulation, and inflammation This is a practical, evidence-based discussion for anyone interested in supporting gut health — whether navigating digestive concerns personally or working with patients in a clinical setting. Please leave any comments or feedback on the episode — we’d love to hear your thoughts. ---------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.comInstagram: https://www.instagram.com/emeranmayer/X (Twitter): https://www.twitter.com/emeranmayermdFacebook: https://www.facebook.com/EmeranMayerMD/LinkedIn: https://www.linkedin.com/in/emeranmayer/ ----------------------------- Chapters: 0:00 – Introduction to Gut Health & Integrative Medicine 1:30 – From Conventional Medicine to Integrative Care 6:30 – Why Gut Health Became Mainstream (Microbiome Science) 12:30 – Fiber, Plant Diversity & Foundational Gut Health 18:45 – Diet Trends Explained: Carnivore, Keto & Mediterranean 22:30 – SIBO, Gut Symptoms & Overdiagnosis 31:45 – GLP-1 Medications, Appetite & Metabolism 41:15 – The Future of Gut Health & Lifestyle Medicine
S1 · E106
Dec 10, 2025 · 58 min
A Life Fueled by Passion: Cooking, Culture, and Longevity with Wolfgang Puck | MGC Ep. 106
In this episode of The Mind-Gut Conversation, Dr. Emeran Mayer sits down with Wolfgang Puck, one of the most iconic chefs of our time, for an intimate conversation about the life experiences, creative influences, and personal philosophy that shaped his extraordinary career. Puck reflects on his difficult childhood in Austria and how the kitchen became both refuge and calling. He shares the pivotal moments — working under a visionary French chef, discovering the power of simple dishes made from exceptional ingredients, and redefining California cuisine — that built the foundation of his global culinary empire. Together, they explore: • How early adversity shaped Puck’s resilience and drive • The pivotal mentor who transformed his relationship to flavor and hospitality • Why simplicity, curiosity, and world-class ingredients remain his guiding principles • The evolution of American dining and why taste is central to healthier eating • How passion, purpose, and creativity fuel energy and longevity well into his 70s This conversation reveals the mindset behind a cultural icon — one who continues to innovate, inspire, and live fully through his craft. ---------------------------- Connect with Dr. Mayer: Website: https://www.emeranmayer.com Instagram: https://www.instagram.com/emeranmayer/ X (Twitter): https://www.twitter.com/emeranmayermd Facebook: https://www.facebook.com/EmeranMayerMD/ LinkedIn: https://www.linkedin.com/in/emeranmayer/ Chapters: 00:00 – Early Hardship & Discovering the Kitchen 08:40 – Mentorship in France & Shaping a Culinary Philosophy 14:00 – Coming to America: Reinvention in New York & LA 23:20 – Creating California Cuisine & Building Spago 31:30 – Flavor, Health, and the Future of Eating 49:50 – Passion, Curiosity & Longevity

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