Microbiome as a Modifiable Organ System | Eugene Chang | Episode 240

Send us Fan Mail

Episode Summary: Dr. Eugene Chang talks about the microbiome’s role as a vital organ, the impacts of antibiotics and Western diets on microbial health, and strategies for restoring a damaged microbiome through diet and fecal microbial transplants. They delve into microbiome dysbiosis, its links to modern diseases, and Chang’s research on personalized microbiome interventions.

About the guest: Eugene Chang, MD is a physician-scientist and Professor of Medicine at the University of Chicago, specializing in gastroenterology. His research focuses on the gut microbiome as a vital organ influencing metabolic and immune health.

Discussion Points:

• The gut microbiome is a vital organ, acquired early in life, that supports metabolic and immune functions, but can be disrupted by antibiotics, leading to diseases like C. difficile colitis.
• Western diets, high in saturated fats and low in fiber, contribute to microbiome dysbiosis, linked to modern conditions like inflammatory bowel diseases, obesity, and allergies.
• Microbiome health is better assessed by functional markers (e.g., short-chain fatty acid production) than taxonomic diversity, as diversity varies widely among healthy individuals.
• A patient with severe food intolerance due to antibiotic-induced microbiome damage was treated over 50 weeks with a tailored diet, restoring healthy microbiome function.
• Different dietary fibers (e.g., beans vs. seaweed) are metabolized at varying rates, affecting gut health; fermented foods like kefir can bypass digestion issues.
• Diet can rapidly reshape the microbiome within 24-48 hours, but severe dysbiosis may require microbial transplants if key microbes are extinct.
• Chang’s research shows a high-fiber, low-fat diet outperforms fecal microbial transplants in restoring microbiome resilience in mice post-antibiotics.
• Future microbiome medicine may involve personalized “omni microbial transplants” targeting both small and large intestines for comprehensive restoration.

Related episode:

• M&M 203: Metagenomics, Microbiome Transmission, Gut Microbiome in Health & Disease | Nicola Segata

*Not medical advice.

Support the show

Health Products by M&M Partners:

• AquaTru: Water filtration devices that remove microplastics, metals, bacteria, and more from your drinking water. Through link, $100 off AquaTru Carafe, Classic & Under Sink Units; $300 off Freestanding models.
• OmegaQuant: At-home blood testing to see fatty acid profiles, including omega-3 fatty acids. Use link to see options and support M&M.
• SiPhox Health: Comprehensive, cost-effective bloodwork from the comfort of home. Use code TRIKOMES for 20% off.
• KetoCitra—Ketone body BHB + electrolytes formulated for kidney health. Use code MIND20 for 20% off any subscription (cancel anytime)
• SporesMD: Premium mushrooms products (gourmet mushrooms, nootropics, research). Use code 'nickjikomes' for 20% off.

For all the ways you can support my efforts