RHR: Fibermaxxing: Why the Internet’s Hottest Gut Health Trend Gets It Half Right
Revolution Health Radio
Chris Kresser
4.7 • 1.7K Ratings
🗓️ 26 May 2026
⏱️ 20 minutes
🧾️ Download transcript
Summary
In this episode of Revolution Health Radio, Chris takes a deep dive into the science of dietary fiber, fiber supplements, and microbiome health. He explains why the benefits seen in high-fiber diets may come from whole foods rather than isolated fiber supplements, and why aggressively increasing fiber intake can worsen bloating, gas, and gut dysfunction for some people. He explores the latest research on fiber, short-chain fatty acids like butyrate, gut permeability, and microbiome balance while unpacking the limitations of observational nutrition studies. He also shares practical strategies for improving fiber tolerance, supporting digestive health naturally, and choosing safer approaches for sensitive guts.
The post RHR: Fibermaxxing: Why the Internet’s Hottest Gut Health Trend Gets It Half Right appeared first on Chris Kresser.
Transcript
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| 0:00.0 | Chronic stress and poor sleep are at the root of so many health issues. |
| 0:14.0 | But between work deadlines, family responsibilities, and everything else life throws at us, |
| 0:18.9 | finding calm can feel impossible. |
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| 0:41.0 | promote a sense of calm, achieve focus clarity during the day, and support better sleep at night. |
| 0:47.3 | Just two capsules a day deliver real results. Reduce stress, a calmer mind, improve mood, |
| 0:53.0 | better focus without jitters, and more restful sleep, |
| 0:56.4 | with noticeable benefits in as little as two weeks. Visit adapt naturals.com to learn more about |
| 1:02.3 | steady spirit and take the first step toward going from wired and tired to calm and clear, |
| 1:07.2 | naturally from the inside out. Hey everybody, Chris Kresser here. |
| 1:11.5 | Welcome to another episode of Revolution Health Radio. |
| 1:14.2 | If you've spent any time on health-focused social media over the past year or so, |
| 1:18.0 | you've probably seen the fiber-maxing trend. |
| 1:20.9 | The idea that dramatically increasing your fiber intake, usually through supplements, |
| 1:25.2 | is one of the most important things you can do for your gut health and long-term well-being. Fiber recommendations from influencers and health creators have gone |
| 1:33.0 | from eat more vegetables to load up on cillium husk and inuline every day, and millions of people |
| 1:38.8 | are following that advice. I understand why the trend is taken off. The messaging is simple, the supplements are inexpensive, |
| 1:45.8 | and for decades, public health guidelines have told us that more fiber is better. The idea that |
| 1:50.9 | eating more fiber protects you against heart disease, colon cancer, and metabolic disorders |
| 1:54.8 | has been repeated so consistently that it feels almost beyond question. I've been thinking and writing about fiber for a long time, |
... |
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