Moderate Diet

Fermented Foods and the Gut-Brain Axis

Summary

Regular live-culture fermented foods (yoghurt, kefir, kimchi, sauerkraut, miso) plausibly increase gut microbiome diversity and support gut comfort at a low risk, but the strongest human trial used ~6 servings a day and its primary endpoint was null, so keep the claim modest: a daily serving is a sensible, cheap addition, not a proven anti-inflammatory or mood cure. ---

MODERATE (one strong independent RCT for the microbiome/immune signal; mood evidence weak; dose gap unresolved)Last updated 2026-07
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