The Fiber Debate: Why Not Everyone Thrives on High-Fiber Diets episode artwork

EPISODE · Dec 23, 2025 · 38 MIN

The Fiber Debate: Why Not Everyone Thrives on High-Fiber Diets

from The Habit Healers · host Laurie Marbas, MD, MBA and Chris Miller MD

In this episode, Dr. Laurie and Dr. Chris Miller dive into the fascinating world of fiber, discussing its various types and functions in the body. Dr. Chris explains the distinction between soluble and insoluble fiber, highlighting how soluble fiber can help with nutrient absorption while insoluble fiber aids in digestion and promotes regular bowel movements. The conversation also touches on Dr. Chris's recent article that challenges the idea that high fiber diets are universally beneficial, revealing that not everyone thrives on them. Join them for a geeky exploration of fiber and its complexities in nutrition!Dr. Miller's Substack: https://chrismillermd.substack.com/Dr. Marbas Substack: https://drlauriemarbas.substack.com/A Big Thank You To Our Sponsors:If you want the best supplement to help you on your plant-based journey, you have to try Complement: https://lovecomplement.com/?aff=62 Get full access to The Habit Healers at drlauriemarbas.substack.com/subscribe

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The Fiber Debate: Why Not Everyone Thrives on High-Fiber Diets

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This episode was published on December 23, 2025.

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In this episode, Dr. Laurie and Dr. Chris Miller dive into the fascinating world of fiber, discussing its various types and functions in the body. Dr. Chris explains the distinction between soluble and insoluble fiber, highlighting how soluble fiber...

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