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ZOE Science & Nutrition · June 12, 2025 · 52m
Your Gut: The Inside Story of Our Body's Most Underrated Organ
Harvard gastroenterologist Dr. Trisha Pasricha explains why the gut is the most underappreciated organ in the body — producing 70% of immune cells, 95% of serotonin, and communicating constantly with the brain via the vagus nerve.
This summary was generated from show notes and public descriptions, not from a full transcript review. Details may contain inaccuracies.
Canon
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Pasricha: the enterochromaffin cells of the gut produce 95% of the body's serotonin. Gut inflammation reduces serotonin production, potentially contributing to depression. This is the gut-brain axis operating through neurochemistry.
Highlights
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70% of the immune system resides in the gut — dietary choices directly train immune function
Pasricha: the gut-associated lymphoid tissue (GALT) contains 70% of the body's immune cells. What you eat directly shapes immune training — fiber feeds beneficial bacteria that produce anti-inflammatory metabolites, while UPF promotes inflammatory immune responses.Was this useful?