The Dr. Hyman Show The Dr. Hyman Show

5 Foods That Are Making Your Brain Fog Worse

Sep 14, 2026 · 21m

Summary

Dr. Mark Hyman explains that brain fog is often a symptom of gut-brain axis dysfunction rather than just aging. He identifies five common dietary triggers, including ultra-processed foods, alcohol, artificial sweeteners, dairy, and gluten, that can increase inflammation and disrupt the microbiome. The episode emphasizes that these foods damage intestinal permeability, sending inflammatory signals to the brain. Hyman recommends using elimination and reintroduction trials to identify personal triggers, suggesting a structured 10-day detox diet to reset metabolism and improve mental clarity.

Topics discussed

Introduction: Brain fog as a symptom, not aging The gut-brain axis and the vagus nerve Gut microbiome, serotonin, and short-chain fatty acids Leaky gut, inflammation, and Long COVID connections Disclaimer: Personalized nutrition over good/bad lists Food #5: Ultra-processed foods and blood sugar spikes Food #4: Alcohol's impact on sleep and gut health Food #3: Artificial sweeteners and microbiome disruption Food #2: Dairy, casein types, and individual sensitivity Food #1: Gluten, celiac, and non-celiac sensitivity How to identify personal triggers via elimination The 10-Day Detox Diet as a structured reset Reintroduction protocol and journaling for results Conclusion: Healing the gut to clear the mind Outro, social media links, and medical disclaimer
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