Gut Microbiome Signals Tied to Psychopathic Traits in Early Study

In an early Translational Psychiatry study, researchers analyzed 200 healthy adults and found that higher levels of certain gut and oral bacteria (Allisonella, Prevotella, Cloacibacillus evryensis) correlated with stronger psychopathic traits, while Treponema vincentii showed a negative association. The work does not show causation and is not yet peer-reviewed, but suggests microbiota could serve as biomarkers for psychopathic traits and potentially influence behavior via inflammation or neurotransmitter pathways like GABA.