nature.com
The gut microbiome shapes social behaviour across animal species
Nature Reviews Microbiology, Published online: 14 November 2025; doi:10.1038/s41579-025-01262-yThe gut microbiome can influence brain activity and complex behaviours. In this Review, Griffiths et al. discuss microbiome-associated effects on social behaviour in laboratory model organisms, free-living animals and humans, and consider potential mechanistic pathways.