The Gut-Brain Fix You Must Know About with Kiran Krishnan

30 Jul 2025 · 106 min
1:46:13

In this episode Mona Sharma interviews microbiologist and gut‑brain expert Kiran Krishnan. They explore how a dysfunctional gut‑liver‑brain axis drives chronic stress, fatigue, cravings, depression, and metabolic imbalance. Krishnan explains the central role of the vagus nerve, its bidirectional signaling, and how sympathovagal tone determines whether the body is in a fight‑or‑flight or rest‑and‑digest state. He introduces a practical "five‑pillar" framework for gut healing: (1) food – high fiber, diverse whole‑food diet; (2) environmental exposure – natural microbes from outdoors and ethnic foods; (3) stress management – breathing, humming, meditation, devices; (4) sleep and movement – reparative time; (5) targeted supplements – spore‑based probiotics, specific pre‑biotics, bile‑support, liver‑support, and personalized stool‑test‑guided interventions. The conversation references the 2025 GAIA whole‑food study, seasonal microbiome shifts in hunter‑gatherer tribes, and the rise of autoimmune disease linked to loss of T‑reg cells. Krishnan shares future directions: psychobiotic strain libraries, custom fermentative cultures, skin‑microbiome therapeutics, and rapid‑test‑driven personalization. Practical myths are debunked (fiber isn’t optional, store‑bought kombucha, coconut oil), and daily rituals (breathing, light exposure, intermittent fasting) are recommended. The episode ends with rapid‑fire Q&A covering kombucha, fiber myths, coconut oil, and favorite ancient healing rituals.

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