269. Your Gut Is Controlling More Than You Think: Health, Performance & Longevity with Dr. Zach Bush
Release Date: 07/30/2026
270. The Psychology of Overeating
The Kris Gethin Podcast
Why do we overeat—even when we know better? In this solo episode, Kris Gethin explores the psychology behind overeating and why willpower alone is rarely the answer. From emotional triggers and stress eating to nutrient deficiencies and eating too quickly, Kris breaks down the hidden factors that drive cravings and offers practical strategies to regain control. You'll learn how to identify your personal eating patterns, build habits that naturally reduce overeating, and create an environment that supports long-term success. Whether your goal is fat loss, better health, or simply developing a...
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269. Your Gut Is Controlling More Than You Think: Health, Performance & Longevity with Dr. Zach Bush
The Kris Gethin Podcast
What if optimizing your health isn’t just about training, nutrition, supplements, and sleep—but about the trillions of microorganisms living within and around you? In this episode, Kris sits down with Dr. Zach Bush to explore the microbiome and its potential influence on everything from digestion and brain function to hormones, athletic performance, recovery, and longevity. Dr. Bush shares how his career evolved from conventional endocrinology into microbiome and environmental health research, and why he believes many of the health challenges we face today cannot be separated from the...
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268. Biohacking's Blind Spot: What Bryan Johnson's Autoimmune Diagnosis Reveals
The Kris Gethin Podcast
Bryan Johnson's recent autoimmune diagnosis has sparked an important conversation throughout the biohacking community. In this episode, Kris Gethin explores what this moment means—not as a criticism of Bryan's dedication, but as an opportunity to ask bigger questions about health, longevity, and the limits of optimization. Kris discusses the difference between collecting health data and creating true health, why modern lifestyles often disconnect us from our biological foundations, and how factors like sunlight, movement, grounding, nutrition, and resilience may matter more than endlessly...
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267. Life Update: Getting Sick in India, Social Media Bans, and the Dangers of Unregulated Supplements
The Kris Gethin Podcast
Kris Gethin shares insights on fitness, biohacking, the challenges of content creation, and personal experiences from recent travels. This episode offers practical advice on training, nutrition, and navigating the complex world of health supplements and social media. Chapters 00:00 Introduction and studio setup 00:37 New energy drink and market challenges 01:18 Kris Gethin's approach to cardio and the Carol Bike 02:13 Research-backed benefits of Rehit protocol 03:38 Recent travels and seminars in India and UK 05:06 Family, work, and managing distractions 06:27 Dealing with Airbnb and property...
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266. The Science Behind Oral Bioregulators for Aging and Performance
The Kris Gethin Podcast
Understanding Oral Bioregulators: A Deep Dive In the world of health supplements, oral bioregulators are emerging as a significant topic of discussion, yet many remain unaware of their potential benefits and applications. In this episode, we'll explore what oral bioregulators are, how they function, and why they might be a game-changer in your health regimen. Chapters 00:00 Introduction and Context 02:26 Understanding Oral Peptide Bioregulators 09:25 Prostate Health and Bioregulators 13:34 Eye Health and Retinal Support 16:53 Kidney Function and Bioregulators 20:33 Liver Health and...
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265. The Free Health Habits That Make Biohacking Work
The Kris Gethin Podcast
Biohacking has become the new status symbol. Everyone wants the chamber, the wearable, the peptide, the IV, the stem cells, the red light, and the expensive recovery tool. But there is a problem most people do not want to admit: the body may not respond to the expensive stuff if the foundation underneath it is weak. In this episode, I’m talking about the part of biohacking that does not look impressive online but changes how well everything else works. The part people skip before they spend thousands trying to fix their energy, sleep, recovery, hormones, body composition, inflammation,...
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264. Why Researchers Are Rethinking Tanning: Melanotan Explained
The Kris Gethin Podcast
Kris Gethin explores the use of melanotan, a peptide that stimulates melanin production, as a healthier alternative to traditional tanning methods. He discusses its benefits for skin health, appearance, confidence, and long-term skin protection, emphasizing research perspectives and safety considerations. Chapters 00:00 Introduction and Kris Gethin's Personal Tanning Experience 01:22 What is Melanotan and Its Historical Use 03:41 Visual Benefits of a Darker Skin Tone 05:38 Health Risks of Tanning Beds and Overexposure 07:32 Pre-Holiday Skin Preparation with Melanotan 08:52 Reduced Sun Exposure...
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263. Can Tesamorelin Help You Burn Fat and Age Better?
The Kris Gethin Podcast
Discover the science behind Tesamorelin, a research peptide targeting visceral fat and promoting health span. Kris Gethin breaks down its mechanisms, research findings, and implications for fat distribution and longevity. Tesamorelin is a synthetic analog of growth hormone release hormone (GHRH), stimulating the pituitary to release endogenous growth hormone rather than supplying synthetic GH. It primarily targets deep visceral fat, especially around organs, instead of just superficial subcutaneous fat. Visceral fat is linked to metabolic diseases, inflammation, insulin resistance, and...
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262. The Food Label Lie: Why Your “Healthy” Food May Not Be What You Think with Will Harris
The Kris Gethin Podcast
Most people think they know what they’re eating because they read the label. Grass-fed. Organic. High protein. Product of the USA. Low calorie. Clean ingredients. But that label is the end of the story, not the beginning. The beginning is the soil. The animal. The feed. The farm. The chemicals. The confinement. The way the food was raised, processed, mixed, marketed, and sold before it ever reached your plate. And that’s where a lot of people are getting fooled. In this episode of The Kris Gethin Podcast, I sit down with Will Harris, fourth-generation farmer and owner of White Oak...
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261. The Peptide Strategy Behind Rapid Tissue Repair
The Kris Gethin Podcast
In this episode, Kris Gethin discusses the science and practical application of peptides like the Wolverine stack, GHKCU, TB 500, and others for tissue repair, skin health, gut integrity, and injury recovery. Whether you're an athlete or interested in longevity, learn how these peptides support regeneration and how to approach their use responsibly. TIMESTAMPS 00:00 - Introduction to peptides and tissue repair strategies 00:27 - Kris on authenticity and setup behind the scenes 0:54 - Overview of the Wolverine stack (BPC 157 + TB 500) 1:24 - Benefits of peptides for skin, ligaments, gut, and...
info_outlineWhat if optimizing your health isn’t just about training, nutrition, supplements, and sleep—but about the trillions of microorganisms living within and around you?
In this episode, Kris sits down with Dr. Zach Bush to explore the microbiome and its potential influence on everything from digestion and brain function to hormones, athletic performance, recovery, and longevity.
Dr. Bush shares how his career evolved from conventional endocrinology into microbiome and environmental health research, and why he believes many of the health challenges we face today cannot be separated from the health of our soil, food systems, and environment.
They discuss the impact of modern agriculture, antibiotics, glyphosate, declining nutrient density, and environmental exposures on the microbiome, along with practical ways to support greater microbial diversity and resilience.
The conversation also explores the gut-brain axis, intermittent fasting, regenerative agriculture, and Dr. Bush’s work developing Restore, including his theory that microbial communication may play a much larger role in human health and longevity than we currently understand.
In This Episode:
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Why Dr. Zach Bush left conventional endocrinology to study the microbiome
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How soil health and modern agriculture may influence human health and nutrition
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What antibiotics, glyphosate, and environmental exposures can do to microbial diversity
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The gut-brain connection and its relationship with mood, cognition, hormones, and neurological health
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Why gut integrity and microbial diversity may matter for athletic performance and recovery
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How modern farming practices have changed the nutritional landscape of our food
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Intermittent fasting and the potential benefits of giving the gut time to repair
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Why different people can respond very differently to the same foods and diets
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The connection between our environment and microbiome resilience
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Regenerative agriculture and rebuilding healthier soil ecosystems
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The science and thinking behind Restore and microbial communication
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How supporting the microbiome could influence resilience, healthspan, and longevity
Timestamps:
00:00 – Why microbiome health matters for fitness, health, and longevity
02:12 – Dr. Zach Bush’s journey from endocrinology to microbiome research
05:12 – How chemicals, pollutants, and our environment may influence human health
06:57 – The gut-brain axis: microbiome, mental health, and neurochemistry
09:36 – Has modern agriculture changed the nutrient density of our food?
12:24 – Antibiotics, glyphosate, microbiome diversity, and gut integrity
15:41 – Inflammation, gut barrier function, and athletic performance
18:36 – What animal agriculture can teach us about the microbiome and performance
20:27 – Gut health, testosterone, growth hormone, and neurochemicals
22:33 – Organic food, dietary diversity, and finding what works for the individual
26:06 – Intermittent fasting, gut repair, and hormonal health
29:24 – Why there is no universal “perfect diet” for the microbiome
33:03 – How your environment shapes microbiome resilience
36:25 – Supporting microbial diversity through food, lifestyle, and environment
41:15 – Microbial communication and its potential role in chronic disease
45:50 – Soil health, regenerative agriculture, and the future of human health
50:29 – Restore: the formulation, research, and theory behind it
56:28 – Cellular repair, resilience, and longevity
1:03:25 – “Cellular Wi-Fi”: understanding microbial communication
1:08:00 – Travel, environmental exposures, and supporting the microbiome
1:10:50 – The bigger picture: restoring the health of our soil, microbiome, and future generations