Boundless Life

50:57

How To Fix Loose Skin After GLP-1 Weight Loss, How...

Boundless Life ·

2026/10/22

Full show notes: BenGreenfieldLife.com/507 In this episode, you’ll discover how much protein to eat in a calorie deficit to hold on to muscle, which bodybuilding myths you can drop, and what can help tighten loose skin after GLP-1 weight loss. I walk you through a new meta-analysis of 29 studies on dieting lifters, why I set my own target higher at 1 to 1.5 grams per pound, and whether switching up exercises builds bigger arms. You’ll also learn how close to failure you really need to

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54:07

Ex-CIA Officer: How To Beat A Polygraph, Recover Like...

Boundless Life ·

2026/10/17

Full show notes: BenGreenfieldLife.com/spysecrets In this episode, I’m re-airing my conversation with former covert CIA officer Andrew Bustamante, founder of EverydaySpy. My friend Adam Wenguer introduced us by saying Andrew was great at marriage, homeschooling, and biohacking, and that he used to be a spy. You’ll hear what a polygraph really measures, how the CIA rebuilds officers after an operation, and the recovery tools he leans on, including L-theanine, CBD oil (use code BEN15 for

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57:10

Doctors Gave Him 4 Years To Live: How A Biochemist...

Boundless Life ·

2026/10/15

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 artery lit up, and a cardiologist gave him four years to live. I went through something very similar

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52:59

The Little-Known “Throwaway” Gland That Is CRITICAL...

Boundless Life ·

2026/10/10

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 leaky gut, why Korean eunuchs lived longer, and which blood markers, like the ratio of helper to killer

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54:20

The High Carb vs. Low Carb DEBATE: Which One Wins For...

Boundless Life ·

2026/10/08

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 version of it I've heard. You'll hear Jay's case that burning fat creates more oxidative stress and drives

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46:50

How Fixing Your THYROID Improves Fat Loss, Hair, Skin...

Boundless Life ·

2026/10/03

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, how reverse T3 can block your active thyroid hormone at the cell door, and why only 2% of hypothyroid

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51:28

Longevity MASTERCLASS: Biological Age, Mitochondrial...

Boundless Life ·

2026/10/01

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 completely different directions. First, Gary Brecka on what two decades of predicting death for life insurance

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59:06

How To Microdose GLP-1s Correctly: Lose The Fat, And...

Boundless Life ·

2026/09/26

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, and more. Tyna's take was very different, and much of what she discussed has held up surprisingly

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53:31

This Man Thinks "AGI" Could Allow Humans To Live...

Boundless Life ·

2026/09/24

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, runs a decentralized AI network, and is chief scientist at Hanson Robotics. We get into the long-lived

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41:47

How To Increase Fertility (For Males & Females!), How...

Boundless Life ·

2026/09/19

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 findings should be interpreted, and why I still use high-dose melatonin for jet lag. Then I move to VO2 max,

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62:02

From 15 Bathroom Trips A Day To A Clean Gut: Fixing...

Boundless Life ·

2026/09/17

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 genome-wide studies that mapped hundreds of risk loci and still explained only a sliver of the disease,

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63:57

A Memory & Learning Expert Reveals His Secrets To...

Boundless Life ·

2026/09/12

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 looked like before satellite navigation, why movement drives brain-derived neurotrophic factor (BDNF),

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51:11

This Guy Healed Knee Arthritis *Without* Surgery (&...

Boundless Life ·

2026/09/10

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 itself, nothing else you do gets in. He arrived at that after a decade of doing everything right, a

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59:59

How To Build An Ideal Workday With Power Naps, Email...

Boundless Life ·

2026/09/05

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 routine underneath all of it: a nap he hasn't skipped in years, a morning he refuses to let anyone

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55:52

How to Replace Sauna, Fasting, and Cold Plunge With a...

Boundless Life ·

2026/09/03

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 re-airing it now because of a new Nature paper finding that lithium is a naturally occurring brain

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37:25

The BIGGEST Step You Can Take To Reduce...

Boundless Life ·

2026/08/29

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 matter most and what I now take before bed with BrocElite® (use code BEN for 25% off your first

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64:04

The Myth Of The Perfect Health Routine: How To Raise...

Boundless Life ·

2026/08/27

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, and he has woven deep spiritual and physiological science into the same framework. You'll learn why the

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27:10

Eat *This* If You Consume Seed Oils, Best Way To...

Boundless Life ·

2026/08/22

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 acid didn't move, why EPA dropped instead, what that does to your inflammatory balance, which seed oils I

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57:49

This 56 Year Old Mom Is Reversing Aging Faster Than...

Boundless Life ·

2026/08/20

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 $100,000 a year, sitting at number two in the world, aging at roughly two-thirds the speed of the calendar,

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60:08

From Cocaine Dealing & Prison To #1 Health Podcast In...

Boundless Life ·

2026/08/15

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 subscribers explaining compounds almost nobody was talking about yet, and today he hosts the number one health

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