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Science · by Jonas Schneider · 2026-10-14

New study suggests gut microbiome diversity might matter more than we thought for mood regulation

nature.com

A new study came out tracking gut bacteria diversity against self reported mood and anxiety measures over a year, finding a stronger correlation than earlier smaller studies suggested. Still early and correlational not causal, but the gut-brain axis research keeps getting more interesting. Anyone in the field or just following this closely have thoughts on how solid this is?

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Comments

Diego Quispe · 0 likes

correlation vs causation is the big asterisk here as always, could easily be that mood affects diet/gut health rather than the reverse

Pixel Atlas · 0 likes

the gut-brain axis research has been one of the more promising areas in psychiatry adjacent science for a while now imo

Ananya Rao · 0 likes

anecdotally improving my diet (more fiber, fermented foods) did seem to coincide with better mood for me, but thats just n=1 obviously

Curious Comet · 0 likes

same experience here honestly, hard to prove causally but noticeable enough to keep it up

Midnight Noodle · 0 likes

would love to see this replicated with a larger more diverse sample before drawing strong conclusions, year 1 studies like this often dont hold up

Tola Ibrahim · 0 likes

probiotics marketing is going to run wild with this study regardless of the actual nuance in the findings lol

Urban Sparrow · 0 likes

as someone with a gi condition, i've long suspected this link based on how my mood tracks with flare ups, glad research is catching up

Silver Sparrow · 0 likes

worth noting self reported mood measures are inherently noisy too, would be interesting to see this paired with more objective biomarkers

Lucas Dubois · 0 likes

the microbiome research field in general feels like its where genomics was 15 years ago, tons of promise but still early innings