Did you know low back pain is caused by gut issues? Or that simply including lemon juice in your recipes can help fix your gut? Or that the integrity of your gut lining can affect your mood and risk of depression?

In this interview with Dr. Alenjandro Junger, author of the book Clean Gut and the website CleanGut.com, you're going to learn all about this, and discover Dr. Junger's methods for eliminating the root cause of disease by fixing your gut.

During the podcast, we also discuss:

-"disguised gut dysfunction" issues...

-why the gut is your second brain...

-the four R's of gut repair...

-cleansing and detoxing...

-why healthy eaters can still have broken guts...

-one supplement that Dr. Junger says "flies under the radar" when it comes to fixing your gut...

-a sample day of eating...

-and much more!

Leave your questions, comments and feedback at BenGreenfieldFitness.com, and grab the excellent book Clean Gut here!

Did you know low back pain is caused by gut issues? Or that simply including lemon juice in your recipes can help fix your gut? Or that the integrity of your gut lining can affect your mood and risk of depression? In this interview with Dr. Alenjandro Junger, author of the book <a href="http://www.amazon.com/mn/search/?_encoding=UTF8&camp=1789&creative=390957&field-keywords=clean%20gut&linkCode=ur2&tag=bengree-20&url=search-alias%3Daps" target="_blank" rel="noopener">Clean Gut</a> and the website <a href="http://www.cleangut.com" target="_blank" rel="noopener">CleanGut.com</a>, you're going to learn all about this, and discover Dr. Junger's methods for eliminating the root cause of disease by fixing your gut. During the podcast, we also discuss: -"disguised gut dysfunction" issues... -why the gut is your second brain... -the four R's of gut repair... -cleansing and detoxing... -why healthy eaters can still have broken guts... -one supplement that Dr. Junger says "flies under the radar" when it comes to fixing your gut... -a sample day of eating... -and much more! Leave your questions, comments and feedback at <a href="http://www.bengreenfieldfitness.com/2013/08/clean-gut-book/">BenGreenfieldFitness.com</a>, and grab the <a href="http://www.amazon.com/mn/search/?_encoding=UTF8&camp=1789&creative=390957&field-keywords=clean%20gut&linkCode=ur2&tag=bengree-20&url=search-alias%3Daps" target="_blank" rel="noopener">excellent book Clean Gut</a> here!

Free fitness, nutrition, biohacking, fat loss, anti-aging and cutting-edge health advice from BenGreenfieldLife.com! Tune in to the latest research, interviews with exercise, diet and medical professionals, and an entertaining mash-up of ancestral wisdom and modern science, along with Q&A's and mind-body-spirit optimizing content from America's top personal trainer.

Boundless Life

Did you know low back pain is caused by gut issues? Or that simply including lemon juice in your recipes can help fix your gut? Or that the integrity of your gut lining can affect your mood and risk of depression? In this interview with Dr. Alenjandro...

Why Healthy Eaters Can Still Have Broken Guts, and What You Can Do About It.

Full show notes: www.bengreenfieldlife.com/skinrepair 

In this episode with Justin Gardner, you'll explore the science behind hypochlorous acid (HOCl), a compound your white blood cells already make to kill pathogens, repair tissue, and control inflammation. You'll discover why it can be 100x more effective than bleach without driving bacterial resistance, how it outperforms hydrogen peroxide and Neosporin without stinging or damaging healthy tissue, and why formulation and pH determine whether a product actually works. From cuts and acne to post-procedure recovery and eczema, this is one of the most versatile and overlooked tools in skin health.

Justin Gardner is a medical technology entrepreneur with over 20 years of experience bringing regenerative and clinical innovations to market. He licensed and scaled hypochlorous acid-based solutions into the consumer space through Active Skin Repair, a line of medical-grade HOCl formulations cleared by the FDA for use on open skin and verified to EWG's highest standards.

👉 Use code BEN at activeskinrepair.com for 30% off all products through 5/28/26.

Episode Sponsors:

Troscriptions: A revolutionary buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit troscriptions.com/BEN or use code BEN for 10% off your first order.

Organifi Shilajit Gummies: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at organifi.com/Ben.

Pendulum: Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at pendulumlife.com/Greenfield.

BlockBlueLight: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at blockbluelight.com/Ben (discount auto-applied at checkout).

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

Full show notes: <a href="https://www.bengreenfieldlife.com/skinrepair">www.bengreenfieldlife.com/skinrepair</a>&nbsp;
In this episode with <a href="https://www.linkedin.com/in/justinsgardner/">Justin Gardner</a>, you'll explore the science behind hypochlorous acid (HOCl), a compound your white blood cells already make to kill pathogens, repair tissue, and control inflammation. You'll discover why it can be 100x more effective than bleach without driving bacterial resistance, how it outperforms hydrogen peroxide and Neosporin without stinging or damaging healthy tissue, and why formulation and pH determine whether a product actually works. From cuts and acne to post-procedure recovery and eczema, this is one of the most versatile and overlooked tools in skin health.
Justin Gardner is a medical technology entrepreneur with over 20 years of experience bringing regenerative and clinical innovations to market. He licensed and scaled hypochlorous acid-based solutions into the consumer space through <a href="https://bengreenfieldlife.com/activeskinrepair">Active Skin Repair</a>, a line of medical-grade HOCl formulations cleared by the FDA for use on open skin and verified to EWG's highest standards.
👉 Use code BEN at activeskinrepair.com for 30% off all products through 5/28/26.
Episode Sponsors:
<a href="https://troscriptions.com/BEN">Troscriptions: </a>A revolutionary buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit&nbsp;<a href="https://troscriptions.com/BEN">troscriptions.com/BEN</a>&nbsp;or use code BEN for 10% off your first order.
<a href="https://organifi.com/Ben">Organifi Shilajit Gummies</a>: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at <a href="https://organifi.com/Ben">organifi.com/Ben</a>.
<a href="https://pendulumlife.com/Greenfield">Pendulum:</a> Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at <a href="https://pendulumlife.com/Greenfield">pendulumlife.com/Greenfield</a>.
<a href="https://pendulumlife.com/Greenfield">BlockBlueLight</a>: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at <a href="https://blockbluelight.com/Ben">blockbluelight.com/Ben</a> (discount auto-applied at checkout).
<a href="https://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="https://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.

Is THIS The Most Effective, Non-Toxic Biocide & Skin Repair Treatment Known To Modern Medicine? Active Skin Repair With Justin Gardner.

Full Show Notes:https://bengreenfieldlife.com/rootsofhealth 

In this special "Best Of" episode, you'll explore some of my most impactful conversations on what actually builds long-term roots of health. If you're dealing with low energy, hormonal issues, chronic inflammation, or just a nagging sense that something's off despite doing all the right things, this episode gives you a clear roadmap.

You'll hear from Daniel Baird on why the synthetic fabric in your underwear may be quietly disrupting your hormones and why microplastics are becoming one of the biggest threats to male reproductive health, while Katy Bowman makes the case that your chair and mattress are doing more damage than you think. Justin Roethlingshoefer shares how a near-death diagnosis at 32 completely rewired his approach to health data and recovery. Dr. Cate Shanahan breaks down how the oils in your kitchen are being incorporated into your cell membranes. Julie Gibson Clark shows how she rebuilt her health from scratch in her 40s. And James Pieratt closes with a deep dive into what Spartan warriors actually trained like, and why it still holds up as one of the most complete blueprints for human performance ever devised.

Whether you listen start to finish or jump to the section that speaks to you most, you'll find something in here that changes the way you think about your health.

Episode Sponsors:

Anthros: Anthros starts with a Precision Posture System at the pelvis so your spine naturally aligns, plus a built-in Clinical Posture Consult. Go to anthros.com and use code BEN for an exclusive $200 discount, risk-free for 60 days.

Kettle & Fire: One ingredient Beef Tallow, 100% grass-fed and finished, for better browning, crispier texture, and a higher smoke point. Head to kettleandfire.com/BEN25 and use code BEN25 for 25% off site-wide.

Quantum Upgrade: Recent research revealed Quantum Upgrade increased ATP production by 20–25% in human cells. Unlock a 15-day free trial with code BEN15 at quantumupgrade.io.

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

Full Show Notes: <a href="https://bengreenfieldlife.com/rootsofhealth">https://bengreenfieldlife.com/rootsofhealth</a>&nbsp;
In this special "Best Of" episode, you'll explore some of my most impactful conversations on what actually builds long-term roots of health. If you're dealing with low energy, hormonal issues, chronic inflammation, or just a nagging sense that something's off despite doing all the right things, this episode gives you a clear roadmap.
You'll hear from<a href="https://www.instagram.com/imdanbaird/"> Daniel Baird</a> on why the synthetic fabric in your underwear may be quietly disrupting your hormones and why microplastics are becoming one of the biggest threats to male reproductive health, while <a href="https://www.instagram.com/nutritiousmovement/?hl=en">Katy Bowman</a> makes the case that your chair and mattress are doing more damage than you think. <a href="https://justinroethlingshoefer.com/">Justin Roethlingshoefer </a>shares how a near-death diagnosis at 32 completely rewired his approach to health data and recovery. <a href="https://drcate.com/">Dr. Cate Shanahan</a> breaks down how the oils in your kitchen are being incorporated into your cell membranes. <a href="https://www.juliegibsonclark.com/">Julie Gibson Clark</a> shows how she rebuilt her health from scratch in her 40s. And <a href="https://www.instagram.com/wildhuntconditioning/">James Pieratt</a> closes with a deep dive into what Spartan warriors actually trained like, and why it still holds up as one of the most complete blueprints for human performance ever devised.
Whether you listen start to finish or jump to the section that speaks to you most, you'll find something in here that changes the way you think about your health.
Episode Sponsors:
<a href="https://bengreenfieldlife.com/anthros">Anthros</a>: Anthros starts with a Precision Posture System at the pelvis so your spine naturally aligns, plus a built-in Clinical Posture Consult. Go to <a href="https://bengreenfieldlife.com/anthros">anthros.com</a> and use code BEN for an exclusive $200 discount, risk-free for 60 days.
<a href="http://kettleandfire.com/BEN25">Kettle &amp; Fire</a>: One ingredient Beef Tallow, 100% grass-fed and finished, for better browning, crispier texture, and a higher smoke point. Head to <a href="http://kettleandfire.com/BEN25">kettleandfire.com/BEN25</a> and use code BEN25 for 25% off site-wide.
<a href="http://quantumupgrade.io/">Quantum Upgrade</a>: Recent research revealed Quantum Upgrade increased ATP production by 20&ndash;25% in human cells. Unlock a 15-day free trial with code BEN15 at <a href="http://quantumupgrade.io">quantumupgrade.io</a>.
<a href="http://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="http://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.

The Dirty Truth About Your UNDERWEAR, Cooking Oil & Chair? Microplastics, Hormones, Seed Oils, HRV & More: Best Of Roots Of Health

Full Show Notes: https://bengreenfieldlife.com/sisson2026 

In this episode with Mark Sisson, you'll discover why VO2 Max may be overrated as the gold standard for longevity, and why chasing it cost Mark 32 pounds of muscle and the real-world function that actually matters. You'll explore his "Old Man Olympics" framework: a decathlete's approach to fitness at 72, spanning strength, speed, balance, and endurance. You'll also get his take on cold plunging, alcohol, biohacking, AI, and find out why foot health may be the single most overlooked lever in your longevity toolkit, from bunions to glute activation to big toe function.

Mark Sisson ignited the ancestral health movement with Mark's Daily Apple and The Primal Blueprint, popularized keto and intermittent fasting with The Keto Reset Diet and Two Meals a Day, and sold Primal Kitchen to Kraft Heinz for $200M. He now runs Peluva, a toe-separated shoe company built around restoring foot strength and healthy gait, and is the author of Born to Walk.

👉 Get 10% off Peluva shoes with code BGREENFIELD at bengreenfieldlife.com/peluva.

Episode Sponsors:

Just Thrive: The Just Thrive Gut Essentials Bundle pairs a probiotic clinically proven to arrive 100% alive in your gut with Digestive Bitters, a blend of 12 science-backed herbs. Visit justthrivehealth.com/BEN and save 20% with promo code BEN, or get a full refund if you don't notice a difference.

Timeline: Give your cells new life with Mitopure, which unlocks a precise dose of Urolithin A and promotes healthy aging. Mitopure starts at $79 at timeline.com/BEN.

TruDiagnostic: Advanced at-home epigenetic testing measuring over a million biomarkers. Visit TruDiagnostic.com and use code BEN20 for 20% off.

ULTRA: A clean, nicotine-free, caffeine-free pouch delivering smooth, sustained energy using clinically backed nootropics and adaptogens. Visit takeultra.com and use code BENGREENFIELD for 15% off.

BlockBlueLight: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at blockbluelight.com/Ben (discount auto-applied at checkout).

Qualia Stem Cell: Science-backed stem cell support taken just four days per month. Visit qualialife.com/boundless and use code BOUNDLESS for 15% off.

Full Show Notes: <a href="https://bengreenfieldlife.com/sisson2026">https://bengreenfieldlife.com/sisson2026</a>&nbsp;
In this episode with <a href="https://www.instagram.com/marksissonprimal/">Mark Sisson</a>, you'll discover why VO2 Max may be overrated as the gold standard for longevity, and why chasing it cost Mark 32 pounds of muscle and the real-world function that actually matters. You'll explore his "Old Man Olympics" framework: a decathlete's approach to fitness at 72, spanning strength, speed, balance, and endurance. You'll also get his take on cold plunging, alcohol, biohacking, AI, and find out why foot health may be the single most overlooked lever in your longevity toolkit, from bunions to glute activation to big toe function.
Mark Sisson ignited the ancestral health movement with <a href="https://www.instagram.com/marksdailyapple/">Mark's Daily Apple </a>and <a href="https://amzn.to/4fiN0mk">The Primal Blueprint</a>, popularized keto and intermittent fasting with <a href="https://amzn.to/4tAiqbA">The Keto Reset Diet </a>and <a href="https://amzn.to/3RnQEBv">Two Meals a Day</a>, and sold Primal Kitchen to Kraft Heinz for $200M. He now runs <a href="https://bengreenfieldlife.com/peluva">Peluva</a>, a toe-separated shoe company built around restoring foot strength and healthy gait, and is the author of Born to Walk.
👉 Get 10% off Peluva shoes with code BGREENFIELD at <a href="https://bengreenfieldlife.com/peluva">bengreenfieldlife.com/peluva</a>.
Episode Sponsors:
<a href="https://justthrivehealth.com/BEN">Just Thrive</a>: The Just Thrive Gut Essentials Bundle pairs a probiotic clinically proven to arrive 100% alive in your gut with Digestive Bitters, a blend of 12 science-backed herbs. Visit <a href="http://justthrivehealth.com/BEN">justthrivehealth.com/BEN</a> and save 20% with promo code BEN, or get a full refund if you don't notice a difference.
<a href="http://timeline">Timeline</a>: Give your cells new life with Mitopure, which unlocks a precise dose of Urolithin A and promotes healthy aging. Mitopure starts at $79 at <a href="http://timeline.com/BEN">timeline.com/BEN</a>.
<a href="https://bengreenfieldfitness.com/trudiagnostictest">TruDiagnostic</a>: Advanced at-home epigenetic testing measuring over a million biomarkers. Visit <a href="https://bengreenfieldfitness.com/trudiagnostictest">TruDiagnostic.com</a> and use code BEN20 for 20% off.
<a href="https://bengreenfieldlife.com/ultra">ULTRA</a>: A clean, nicotine-free, caffeine-free pouch delivering smooth, sustained energy using clinically backed nootropics and adaptogens. Visit <a href="http://takeultra.com">takeultra.com</a> and use code BENGREENFIELD for 15% off.
<a href="http://blockbluelight.com/Ben">BlockBlueLight</a>: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at <a href="http://blockbluelight.com/Ben">blockbluelight.com/Ben</a> (discount auto-applied at checkout).
<a href="https://qualialife.com/boundless">Qualia Stem Cell</a>: Science-backed stem cell support taken just four days per month. Visit <a href="http://qualialife.com/boundless">qualialife.com/boundless</a> and use code BOUNDLESS for 15% off.

Why Healthy Eaters Can Still Have Broken Guts, and What You Can Do About It.

In 1 playlist(s)

Boundless Life

Social links

Follow podcast

Recent clips