The gut microbiome and mental health - Nature Reviews Microbiology
www.nature.com
This study reports a large population cohort study in which the authors correlate microbial taxa with quality of life and the incidence of depression.

As I’ve been reading about the studies about microbiome differences in people with various mental illnesses, is there any potential for a connection regarding contagion of mental issues? Like if people are around each other for long enough, will their microbiome and therefore their mental state become similar?