Dr. Will Bulsiewicz: Why your gut runs your immune system

ℹ️ EPISODE INFO

Released

January 1, 2026

Duration

2h 11m

Channel

The Diary of a CEO

Watch on YouTube

▶ Open ↗

📝 EPISODE DESCRIPTION

Tired of your health issues? Top gastroenterologist DR WILL BULSIEWICZ reveals NEW information about how leaky gut drives inflammation, cancer risk, bloating and brain fog, and the daily habits to heal FAST. Dr Will Bulsiewicz is one of the world’s leading experts on the gut microbiome. He is the US Medical Director at ZOE, founding director of The Gut & Microbiome Center for Excellence and bestselling author of “Fibre Fuelled” and the upcoming book, “Plant Powered Plus”. He explains: ◼️Why inflammation is driven by the gut, not just genetics ◼️How leaky gut triggers bloating and immune dysfunction ◼️The gut-immune link behind cancer and chronic disease ◼️Why fermented foods and fibre rebuild the microbiome ◼️How the gut-brain connection shapes mood, focus, and longevity 00:00 Intro 03:15 What Is Inflammation? 05:23 Can You Be Thin and Still Have Inflammation? 05:58 Why Does Chronic Inflammation Happen? 06:59 The Shocking Link Between Inflammation and Gut Health 10:34 Chronic Inflammation Causes These Diseases 12:04 The Importance of a Healthy Gut 12:39 Faecal Transplants to Heal the Gut 15:14 Link Between Gut Microbiome and Cancer 18:06 Parkinson's Could Start in the Gut 20:28 Can Anyone Get a Faecal Transplant? 21:10 A Lot of Us Have Gut Issues 23:24 Does Gas and Bloating Indicate a Health Issue? 31:21 Everyone Thinks They're Gluten Intolerant 32:23 Processing Issues With Gluten 34:51 Is Sourdough the Best Bread? 36:01 Your Gluten Intolerance Might Be This Instead 38:06 How Long Does It Take to Repair the Gut? 41:04 What Causes Bowel Diseases? 42:29 Antibiotics Double Your Risk of Bowel Disease 43:04 Fixing a Chronic Gut Issue With a Fecal Transplant 47:34 What Diet Trends Spread Misinformation? 51:41 Fibremaxxing and the Importance of Fibre 54:36 Best Foods to Eat for Fibre 58:58 How Fibre Affects Immunity and Ageing 59:48 This Is What Alcohol Does to the Gut 1:05:22 Ads 1:07:11 Benefits of Turmeric 1:09:10 Dr Will's Perfect Gut Day 1:19:27 Good Breakfast for Children 1:20:32 What Would Impact Your Child's Gut Health? 1:25:09 Dr Will's Perfect Gut Day 1:33:06 Optimal Time to Workout 1:34:43 Perfect Time Between Meals 1:35:41 Perfect Evening Routine 1:39:10 Would You Recommend Fasting? 1:42:08 Ads 1:44:05 Trauma Impacts Gut Function 1:49:22 How Would I Heal My Trauma-Related Gut Issues? 1:50:29 Stool Test – Is Your Gut Healthy? 1:53:21 Magnesium for Constipation and Sleep 1:54:51 This Is Easier Than You Think – 4 Things You Need 1:58:45 Dr Will's Transformation 2:04:49 Message to My Dad 2:09:22 Your Biggest Regret Follow Dr Will: Instagram - https://bit.ly/457iRAx The Gut Health MD - https://bit.ly/4p2svLU Youtube - https://bit.ly/4aGQJrKl Dr Will Bulsiewicz’s upcoming book, ‘Plant Powered Plus: Activate the Power of Your Gut to Tame Inflammation and Reclaim Your Health’: UK Version: https://amzn.to/45hIcb1 US Version: https://bit.ly/49hpCAZ Independent Research: https://docs.google.com/document/d/1YDjg-o8aGLb-Okn6xk3L06SclNtjybYl8pejVf12f2A/edit?pli=1&tab=t.0 The Diary Of A CEO: ◼️Get the 2026 Goal Setting Guide - https://bit.ly/ytgoalsettingguide ◼️Join DOAC circle here - https://doaccircle.com/ ◼️Buy The Diary Of A CEO book here - https://smarturl.it/DOACbook ◼️The 1% Diary is back - limited time only: https://bit.ly/3YFbJbt ◼️The Diary Of A CEO Conversation Cards (Second Edition): https://g2ul0.app.link/f31dsUttKKb ◼️Get email updates - https://bit.ly/diary-of-a-ceo-yt ◼️Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb Sponsors: Stan: NO PURCHASE NECESSARY. VOID WHERE PROHIBITED. For Official Rules, visit https://DaretoDream.stan.store Adobe - https://Adobe.Ly/OneBetter Fiverr: https://fiverr.com/diary and get 10% off your first order when you use code DIARY

🎤 SPEAKERS

• Steven Bartlett

  host

• Dr. Will Bulsiewicz

  guest

• Narrator

  other

🧾 EPISODE SUMMARY

In this episode of The Diary of a CEO, featuring Steven Bartlett and Dr. Will Bulsiewicz, Dr. Will Bulsiewicz: Why your gut runs your immune system explores healing Your Gut: Fiber, Fermented Foods, and Daily Rhythms Transform Health This episode with gastroenterologist Dr. Will Bulsiewicz explores how the gut microbiome drives inflammation, disease risk, and overall health, and how quickly it can be repaired with targeted lifestyle changes. He explains the science behind fecal transplants, leaky gut, and short-chain fatty acids, linking them to conditions from cancer and Parkinson’s to mood disorders and IBS. A large part of the discussion focuses on practical tools: fiber-rich and fermented foods, smart use of supplements, circadian-aligned routines, and why ultra-restrictive diet fads are harmful. The conversation ends on how emotional trauma, relationships, and forgiveness are intertwined with gut health and healing, both physically and psychologically.

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