Ben Greenfield Fitness: Diet, Fat Loss And Performance

In this episode, we dive deep into the science and controversy surrounding Quantum Upgrade: systems designed to optimize your energy, recovery, and resilience against modern-day stressors like EMFs and 5G. You’ll hear about fascinating studies involving advanced EEG setups, heart rate variability, ATP production, blood health, and even experiments with pets. The guests break down real research, including placebo-controlled trials and randomized studies, investigating everything from wound healing to parasitic load and spike protein traces. They’ll also tackle skepticism head-on, discussing how quantum technology interacts with your biofield, and how you can personalize your own experience with different settings and frequencies. Philipp von Holtzendorff-Fehling, founder and CEO of Leela Quantum Tech and Quantum Upgrade, is a coach, entrepreneur in the conscious-raising space, and energy healer. In parallel to a successful international business career, he constantly worked through b

Brian McMaster is a dynamic entrepreneur, faith-first leader, and lifelong student of health, peak performance, and personal mastery. As Founder and CEO of M&M Quality Solutions, Brian has built the company from the ground up into a trusted logistics and fulfillment partner serving premier health, wellness, and lifestyle brands nationwide. Driven by excellence and grounded in purpose, Brian brings a fearless spirit to both business and life. He’s a 4th-degree black belt in taekwondo, a passionate adventure-seeker, and a dedicated biohacker who is constantly exploring the best ways to optimize mind, body, and spirit. His disciplined daily routine reflects a deep commitment to health and longevity — blending cutting-edge biohacking tools, advanced recovery methods, and spiritual practices to sustain peak physical, mental, and spiritual performance. As a pilot-in-training, At the core, Brian is a devoted husband who credits his wife, Amber, as his anchor — a steady source of love, encourage

Gary Brecka is a leading expert in human biology and longevity with over 20 years of experience in biohacking and functional medicine. As the former Chief Human Biologist and co-founder of 10X Health System, he developed innovative wellness protocols that optimize performance and restore balance in the body. Now, through The Ultimate Human brand (you can check out our podcast together here), Gary continues his mission to help people take control of their biology using measurable, science-based methods. Specializing in serum blood and genetic biomarkers, he enhances human performance through personalized nutrition, advanced supplementation, movement protocols, and technologies such as oxygen therapy and red light treatments. Gary works with a hand-picked clinical team of board-certified physicians (M.D.s), Ph.D. researchers, business leaders, functional medicine experts, motivators, and scientists—all united by one mission: to discover and deliver the safest, fastest ways to optimize the mind, body, and

In this special live-recorded episode, actor Luke Cook—known for Chilling Adventures of Sabrina and Guardians of the Galaxy Vol. 2—joins me for a raw, unfiltered conversation about what it really means to live well. Recorded during A Boundless Evening at HUME Los Angeles, this fireside chat brings together curiosity, science, and honest reflections on health, performance, and purpose. We start with the rhythms of daily life—how I approach mornings, training, and eating while traveling—and why balance beats perfection. You’ll hear how my cyclical keto approach helps me stay sharp and grounded while still enjoying the moments that matter. From movement habits and fasted training to the little environmental tweaks that keep me active throughout the day, we explore how health can be both sustainable and joyful. We dive into the evolving world of biohacking—cold plunges, nootropics, and stress adaptation—through both skepticism and lived experience. The conversation goes d

In this episode with Meagan Lindquist, you’ll discover the world of AHCC, a cultured mushroom extract with a remarkable range of health benefits. We explore its origins, patented culturing process in Japan, and what makes AHCC uniquely bioavailable compared to other mushroom supplements. Meagan shares her health journey, her experiences supporting patients, and her passion for spreading awareness about AHCC’s research-backed potential—from cancer and HPV to Lyme disease and overall immune function. The conversation highlights AHCC’s role as an immunomodulator, antioxidant, and anti-inflammatory compound, reviewing studies that demonstrate its benefits for general immune support and as complementary therapy for serious conditions, such as cancer and chronic infections. Practical topics include supplement quality, dosing, and how to find credible sources. By the end, you’ll have insights and actionable information to evaluate AHCC as part of a thoughtful, science-driven approach to

In this episode with Dr. Joel “Gator” Warsh, you’ll discover a balanced perspective on vaccines, especially childhood vaccination, at a time when open, evidence-based dialogue is more important than ever. Drawing on his work as an integrative pediatrician, Dr. Warsh shares insights from his new book Between a Shot and a Hard Place, designed not to fuel division but to empower parents with knowledge, research, and practical tools for making informed decisions. You’ll explore the origins and evolution of vaccines, how schedules have changed, the strengths and flaws of safety testing, the nuanced risks and benefits of individual shots, and the importance of informed consent and medical freedom. By weaving together mainstream medicine and holistic practices, Dr. Warsh highlights where the science is strong, where questions remain, and why open conversation is the path toward clarity, confidence, and compassion—and if you’re interested in cutting through fear and hype to underst

In this episode we dive into a hotly debated topic: should you eat meat or not? Ben is joined by two powerhouse guests with decades of experience in nutrition and health—Dr. Shawn Baker, best-selling author of The Carnivore Diet and leading carnivore advocate, and Joel Greene, creator of The Immunity Code and champion of dietary diversity. In this spirited debate, Dr. Baker highlights the benefits of a strict carnivore approach—meat, eggs, some dairy, and minimal plant foods—not only for himself but also for patients managing chronic health issues. He explains why animal-based nutrition can be so effective, breaks down the science of ketosis and gut health, and responds to concerns about long-term effects of fiber-free diets. Meanwhile, Joel Greene makes the case for dietary variety, drawing from evolutionary biology, clinical research, and personal experience. He explores the synergies of combining animal and plant foods, the role of fiber in gut and immune health, and the ancestral rhythms

In this episode, Emily Kaplan—co-founder of the Broken Science Initiative (BSI)—pulls back the curtain on systemic flaws undermining modern research. From manipulated data in high-impact journals to misuse of peer review and statistical tools like p-values, Emily reveals how corruption and misconduct shape medicine, including the infamous Alzheimer’s study that misled treatment development for years. She explains how BSI is working to restore trust in science through education, transparency, and a renewed focus on metabolic health. One key effort is MetFix, a grassroots initiative empowering communities to prevent and reverse chronic disease with nutrition and lifestyle interventions. Emily brings deep expertise in strategy and communication. As BSI’s CEO, she has built educational platforms, training programs, and professional networks that unite healthcare workers, patients, and scientists to confront irreproducibility, misconduct, and the true drivers of chronic illness. Through in-

In this fascinating episode with Will Ahmed, founder of WHOOP (you can click here to get 1 month free on your membership), you’ll get to discover how his company is redefining health tracking through continuous 24/7 physiological monitoring, actionable coaching, and innovations like ECG readings and noninvasive blood pressure insights.  Will Ahmed is the Founder and CEO of WHOOP, which has developed next-generation wearable technology for optimizing human performance and health. WHOOP members include professional athletes, Fortune 500 CEOs, fitness enthusiasts, military personnel, frontline workers, and a broad range of people looking to improve their performance. Ahmed is a member of the Board of Fellows of Harvard Medical School, where he provides counsel to the Dean and faculty on topics related to the strength and health of the institution. Ahmed was named to the 2021 Sports Business Journal 40 Under 40 list as well as 2020 Fortune 40 Under 40 Healthcare list and previously named to the Forbes

In this episode with Dr. Bryce Appelbaum, you'll get to explore how hidden vision problems often masquerade as dyslexia, ADD, or ADHD—and how his vision therapy retrains the eye-brain connection to transform reading, focus, coordination, and even recovery from concussions. You'll also discover how his testing and training methods, from intensives to at-home programs, not only restore confidence in struggling readers like my wife Jessa but also sharpen performance for athletes and optimizers seeking a competitive edge. Dr. Bryce Appelbaum is a board-certified neuro-optometrist and recognized leader in vision therapy, specializing in retraining the eye-brain connection to unlock human potential. Through his practice, MyVisionFirst (you can use code BGL to save 10% off selected products), and his groundbreaking online program ScreenFit (you can use code BGL to save $200), he helps patients overcome post-concussion visual challenges, developmental delays tied to dyslexia and ADHD, and the visual stress crea

Tyler W. LeBaron, MSc, Ph.D., is the founder and executive director of the nonprofit Molecular Hydrogen Institute. With a background in biochemistry, physiology, and exercise science, he teaches exercise physiology and chemistry labs at Southern Utah University as an adjunct instructor. He interned at Nagoya University in Japan's Department of Neurogenetics, researching the molecular mechanisms of hydrogen gas on cell-signaling pathways. Tyler is a director of both the International Hydrogen Standards Association (IHSA) and the International Molecular Hydrogen Association (IMHA). He speaks at medical and academic conferences worldwide, collaborates with researchers globally, and works to advance the education and awareness of hydrogen as a therapeutic medical gas. Outside the lab, he trains in running and competes in arm wrestling.  Alex Tarnava is a self-taught scientist, inventor, and author whose work bridges biomedical innovation, sovereign health, and philosophical disruption. He invented

Jay Feldman is a health coach, independent health researcher, and the host of The Energy Balance Podcast. With degrees in neuroscience and exercise physiology from the University of Miami, he chose not to pursue medical school after realizing conventional medicine often fails to address the root causes of common health issues.  After exploring both conventional and alternative paradigms and experimenting with diets from vegetarian to keto, Jay discovered that cellular energy is the foundation of health. He now uses a bioenergetic approach to help people worldwide overcome symptoms of low energy, including chronic hunger, poor sleep, and stubborn weight gain. Dr. Eric Westman is an Associate Professor of Medicine at Duke University. He is board-certified in Obesity Medicine and Internal Medicine, and founded the Duke Keto Medicine Clinic with Dr. William S. Yancy Jr. in 2006 after 8 years of clinical research regarding low-carbohydrate ketogenic diets. A past president and master fellow of the Obesity Med

In this episode with repeat guest Jordan Rubin, you’ll uncover a holistic plan for building strength, health, and longevity from one of the world’s most recognized natural health experts. Jordan shares how his family tradition of reciting Psalm 91 and insights from his new book, The Biblio Diet, reveal timeless biblical wisdom for vibrant living. He also highlights his groundbreaking research on “healing leaves” from fruit trees—their potential to fight cancer, balance blood sugar, reduce inflammation, and support longevity—and how to turn them into a daily healing tea. Jordan Rubin is the founder of Garden of Life, Beyond Organic, and Ancient Nutrition, and the New York Times bestselling author of The Maker’s Diet and over 30 other titles, including The Biblio Diet. An eco-entrepreneur and global lecturer, he has shared his message of natural health worldwide, formulated nearly 1,000 bestselling supplements and functional foods, and operates Regenerative Organic Cert

Anurag Singh is currently Chief Medical Officer at Timeline that develops next generation advanced nutritional and skincare products targeting improvements in mitochondrial and cellular health. With a M.D. in internal medicine and a Ph.D. in immunology, his experience includes work for top consumer health (Nestlé, Nestlé Health Science) and startups companies (Amazentis/Timeline). He’s authored > 50 articles for top science journals, been awarded >20 patents and has designed and led > 50 randomized clinical trials. His research over the past decade across multiple clinical trials on the postbiotic Urolithin A (Mitopure) and its health benefits has led to the launch of multiple consumer products. Full show notes: bengreenfieldlife.com/timelineimmunity Episode Sponsors: Jaspr: Breathe air so clean you can smell the difference with the Jaspr commercial-grade air purifier. Visit Jaspr.co/ben and use code BEN for 10% off. Troscriptions: Explore Troscriptions' revolutionary buccal troch

In this episode with Caleb Applegate, you’ll step into the cutting edge of health, technology, and community-building as we dive into LIFE Network—the company we co-founded to transform how people connect over wellness. You’ll get an insider’s look at the newly upgraded app, designed to enrich your health journey while cutting through the clutter and distractions of traditional platforms. If you’re ready to cut through the noise, connect with a like-minded community, and discover what’s next at the intersection of health, tech, and wellness, this is an episode you won’t want to miss. Full show notes: https://bengreenfieldlife.com/bencaleb2 Episode Sponsors:  IM8: Ditch the cabinet full of supplements—IM8 packs 92 powerhouse ingredients into one delicious scoop for all-day energy, gut health, and cellular support. Go to IM8Health.com and use code BEN for an exclusive gift—fuel your body the right way! Unmatched Outlier: Outlier by Unmatched is the worl

In this powerful conversation with Bill Rapier, you’ll discover both the practical and philosophical sides of self-defense, preparedness, and living with vigilance and intention. Bill—a former Navy SEAL and founder of Amtac Shooting—shares not only his deep expertise in firearms, blades, and integrated combatives, but also the mindset that will help you train responsibly and live ready. You’ll learn why carrying tools like firearms and knives is less about aggression and more about having “violence insurance”—a rare but critical safeguard for protecting yourself and others when it truly matters. Whether it’s choosing your first holster, sharpening threat assessment skills, or building resilience, this episode gives you the tools and mindset to elevate your preparedness (while staying true to your values and priorities). Full show notes: https://bengreenfieldlife.com/amtac Episode Sponsors:  MASA Chips: Introducing the best guilt-free snack on the market: cl

In this fascinating episode, Dr. Melissa Grill-Petersen guides you through the latest science on female longevity, metabolic health, and strategies for healthy aging. You’ll get to discover why so many of the health and nutrition recommendations you hear might not actually be tailored to women’s unique needs—especially when it comes to hormones, metabolic flexibility, and the impact of stress. Whether you’re new to the world of anti-aging or ready to fine-tune your protocol, you’ll walk away empowered, informed, and equipped to thrive at any age. Full show notes: https://bengreenfieldlife.com/womenpeptides Episode Sponsors:  BIOptimizers Magnesium Breakthrough: The 7 essential forms of magnesium included in this full-spectrum serving help you relax, unwind, and turn off your active brain after a long and stressful day so you can rest peacefully and wake up feeling refreshed, vibrant, and alert. Go to bioptimizers.com/ben and use code ben10 for 10% off any order.  Truvag

I’m always on the lookout for a good book on sleep, and I recently read one of the better titles I’ve found in the past few years: How to Sleep Like a Caveman: Ancient Wisdom for a Better Night's Rest—Based on the Evolutionary Science of Sleep from Saber-Toothed Tigers to Modern Insomnia. Written by today’s podcast guest, Dr. Merijn van de Laar, one of the world’s leading sleep scientists, it is a bit like Sapiens meets Why We Sleep in an evolutionary romp through the science of sleep—and how you can get better rest. If you’re curious about the science of sleep, what our evolutionary past can teach you, and actionable ways to wake up truly rested, this episode is for you. Full show notes: https://bengreenfieldlife.com/cavemansleep Episode Sponsors:  CAROL Bike: The science is clear—CAROL Bike is your ticket to a healthier, more vibrant life. And for a limited time, you can get $100 off yours with the code BEN. Don't wait any longer, join over 25,000 riders

In this fascinating solosode, you'll receive a range of practical hacks and cutting-edge research to elevate your health, fitness, and mental performance. The episode kicks off with an unexpected experiment featuring retatrutide—a triple-action peptide that targets multiple hunger and metabolism pathways. You'll explore the nuances of microdosing retatrutide, and I'll reveal how tiny tweaks in dosing can yield powerful effects on appetite, cognition, and even social behavior around food. This is an episode brimming with actionable takeaways, emerging science, and a healthy dose of curiosity—poised to ignite your journey to a more complete, boundless you. Full show notes: https://bengreenfieldlife.com/493 Episode Sponsors:  Timeline Nutrition: Give your cells new life with high-performance products powered by Mitopure, Timeline's powerful ingredient that unlocks a precise dose of the rare Urolithin A molecule and promotes healthy aging. Go to shop.timeline.com/BEN and use code BEN to get

In this episode, you’ll get to explore the fascinating world of photobiomodulation and cutting-edge light therapy with one of its true innovators, Kris Sweeting. You'll dive deep into the science, application, and surprising real-world stories behind the red, UVA, and UVB light devices that are making waves in health, wellness, and even the celebrity circuit. Whether you’re interested in getting the most from light therapy for your brain, skin, or mitochondria—or you want to geek out over the bleeding edge of biohacking tech—you’ll find a treasure trove of insights in this episode. Full show notes: https://bengreenfieldlife.com/emrpodcast Episode Sponsors:  Pique: Pique Teas are where plants and science intersect to produce teas and supplements of unrivaled efficacy, purity, and convenience. Go to Piquelife.com/Ben to get 20% off for life, plus a free starter kit with a rechargeable frother and glass beaker to elevate your ritual. Organifi Green Juice: Reset your body with O