Boundless Life

Full show notes: BenGreenfieldLife.com/healthyheart In this episode, I’m re-airing my conversation with biochemist and engineer Patrick Theut about how he cleared the plaque from his own heart. Patrick was 48, winning 5Ks and playing ice hockey when he passed every test in a Mayo Clinic physical, then asked for one more scan they said he didn’t need. It came back with his left main art...

Full show notes: BenGreenfieldLife.com/thymuspodcast In this episode, I sit down with internal medicine physician Dr. Abud Bakri to talk about the thymus, the small gland on top of your heart that trains your immune system and starts shrinking as soon as you hit puberty. You’ll hear what speeds that shrinkage up, from birth control and testosterone therapy to chronic infections, stress and a...

Full show notes: BenGreenfieldLife.com/lowcarbhighcarb In this episode, I'm re-airing the first debate ever held on the Boundless Life podcast, with repeat guest Jay Feldman and Duke obesity medicine physician Dr. Eric Westman going head to head on whether your cells run better on carbohydrates or fat. The carbs-are-good, carbs-are-bad argument has only gotten louder, and this is still the best ve...

Full show notes: BenGreenfieldLife.com/thyroidhealth In this episode, I'm re-airing one of the most comprehensive thyroid conversations I've ever had, with repeat guest Dr. Amie Hornaman . Six doctors told her she was normal while she gained 25 pounds in contest prep, and the seventh finally found the goiter. You'll hear why thyroid stimulating hormone (TSH) on its own misses most of the picture,...

Full show notes: BenGreenfieldLife.com/ultimatelongevity In this episode, I'm pulling the best of three longevity conversations into a best-of compilation: blood oxygen as the root of nearly every disease pathway, the molecule that clears out your worn-out mitochondria, and a 61-year-old engineer who is out-aging tech billionaires on a normal budget. All three come at the same problem from complet...

Full show notes: BenGreenfieldLife.com/drtyna I'm re-airing my conversation with Dr. Tyna Moore about GLP-1s because almost everything she said about them is still being misunderstood, and she was one of the earliest voices advocating for using these drugs at very low doses. When we recorded, the internet had largely decided GLP-1 agonists were terrible: muscle wasting, "Ozempic face," suicidality...

Full show notes: BenGreenfieldLife.com/AGIpodcast In this episode, you'll hear how artificial intelligence is actually being pointed at aging right now, including an algorithm picking which Chinese herbs extend a fruit fly's life, plus whether the biological age test you just paid for means anything at all. My guest is Dr. Ben Goertzel , who popularized the term artificial general intelligence, ru...

Full show notes: BenGreenfieldLife.com/506 In this episode, you'll discover three things I've been asked about constantly: whether the melatonin heart failure headline is worth worrying about, how much sleep is actually too much or too little, and the shortest route to a higher VO2 max. I break down what the melatonin study did and did not reveal, why a key prescription detail changes how the find...

Full show notes: BenGreenfieldLife.com/gutsolution In this episode, you'll meet Josh Dech , a former paramedic turned Crohn's and colitis consultant who argues that all three things Western medicine says about inflammatory bowel disease are wrong: it's not genetic, not classically autoimmune, and not idiopathic. We walk the research trail from a 1988 Swedish twin study through the NOD2 gene to the...

Full show notes: BenGreenfieldLife.com/limitlessdaily In this episode, you'll hear repeat guest Jim Kwik talk about cognitive offloading and where the line sits between using your phone as a second brain and letting your own memory go slack. We dig into the MIT study that scanned essay writers' brains and found the ChatGPT group remembered the least of what they wrote, what London cabbies' brains...

Full show notes: BenGreenfieldLife.com/jubilee In this episode, John Jubilee makes the case that almost everything you have been told about hydration is beside the point. His argument is that the water is not the problem, the cell is: that a membrane gets progressively harder to penetrate as you age, that your water and your supplements simply bounce off it, and that until you change the membrane...

Full show notes: bengreenfieldlife.com/bolt In this episode, Chandler Bolt and I talk about how we've each landed on almost identical daily systems for running a company, and the one place we still disagree. Chandler makes the case that a book is a business asset rather than an income stream, explains what it actually costs to buy your way onto the New York Times list, and then walks through the r...

Full show notes: bengreenfieldlife.com/pharma In this special repeat episode, Dr. Sandra Kaufmann breaks down which pharmaceuticals mimic the effects of things you already do for your health: what replaces a sauna session , what replaces a fast, what replaces a cold plunge (use code BENFORGE for $500 off select products), and what she takes with meals to blunt the damage from glucose spikes. I'm r...

Full show notes: bengreenfieldlife.com/505 In this solosode, you'll get the latest on microplastics, spinal disc health, and what a heart scan sees that a cholesterol panel misses. A new seven-day trial pitted five plastic-avoidance strategies against each other, and the results tell you exactly where to spend your effort if you can't overhaul everything at once. You'll hear which plastic sources...

Full show notes: https://bengreenfieldlife.com/holyhealth In this episode with Justin Roethlingshoefer, you'll hear from a former NHL performance coach turned health entrepreneur whose new book, Holy Health , is the one I chose for my father-son book club this month. This is not another eat-honey-and-drink-milk Bible health book. Justin is a genuine biohacker who works with pro athletes worldwide,...

Full show notes: https://bengreenfieldlife.com/504 In this solosode, you'll get the latest research on three questions I keep getting asked. First, seed oils: a brand-new randomized controlled trial put 52 adults on either a low or a typical Western intake of linoleic acid for 12 weeks, and the results are important less for what they found than for what they didn't. You'll hear why arachidonic ac...

Full show notes: https://bengreenfieldlife.com/juliepodcast In this episode with Julie Gibson Clark, I'm highlighting a throwback conversation because the gap it exposed has only gotten wider. There's a leaderboard called the Rejuvenation Olympics where people submit a blood test that measures how fast they're aging. When we recorded, Julie was a 55-year-old single mom in Phoenix making under $100...

Full show notes: https://bengreenfieldlife.com/dylan In this episode with Dylan Gemelli, you'll hear one of the wildest origin stories in the health world. Dylan went from college athlete to Milan model to cocaine dealer to a 15-year prison sentence, and came out on the Fourth of July with two felonies, no job prospects, and a decision to start over. Within a year he had a million YouTube subscrib...

Full show notes: https://bengreenfieldlife.com/blackseedoil In this episode with Dr. Michael Murray, one of the most respected figures in natural medicine and the formulator of ThymoQuin® , you'll discover the science behind black seed oil: what thymoquinone actually is, why the full spectrum of the seed's compounds matters more than chasing a single active ingredient, and why it may be the mo...

Full show notes : https://bengreenfieldlife.com/sunpodcast In this episode, journalist Rowan Jacobsen , author of In Defense of Sunlight , challenges everything you thought you knew about sun exposure. Modeled after Michael Pollan's In Defense of Food , his book argues we've been gaslit into a "zero-sun policy" the science does not actually support. You'll hear why melanoma is tied to intermittent...

Full show notes: https://bengreenfieldlife.com/peptides2026 In this episode with Dr. Matt Cook , recorded days after he returned from Washington, D.C., you'll get a breakdown of what just happened to peptides in the United States. You'll hear what the FDA's Pharmacy Compounding Advisory Committee actually voted on, why seven popular peptides were pulled two years ago, which six of the seven were j...

Full show notes: https://bengreenfieldlife.com/nickpodcast In this episode, you'll get a practical, plain-language tour of breathwork with Nick Sweeney , a breathwork coach who rebuilt his body with breath after a college bike accident left him unable to walk. You'll learn his Vortex Breath and the Fibonacci counting behind it, why slow breathing is really cardiovascular training that may predict...

Full Show Notes : https://bengreenfieldlife.com/503 In this solosode, you'll get the latest research on the questions I hear most: whether the peptide BPC 157 can cause cancer, the body fat percentages people rate most attractive for men and women (and how low is too low), how a "dad bod" before conception can affect your future kids' health, how "myo-reps" deliver the same strength and size gains...

Full show notes: https://bengreenfieldlife.com/floridahunt In this episode, recorded at Lightsey Family Ranch in Venus, Florida, I'm joined by my sons River and Terran and repeat guest Adam Wenguer , founder of Element Health , for the first stop in a father-and-sons adventure project inspired by former Boundless guest Sahil Bloom's The 5 Types of Wealth . You'll hear the ethics and deeper meaning...

Full show notes: https://bengreenfieldlife.com/saunapodcast In this episode with Luke Chapman and Owen Buchanan , founders of Western Sol , you'll hear the story behind the custom sauna I recently had built in my backyard in Idaho, and the story behind the company itself, which started when a mold exposure in Hawaii sent Luke into daily sauna use. You'll gain insights into the actual science of he...