Gut Microbes May Mirror Psychopathic Traits, Early Study Finds

A small, first-of-its-kind study from University of Porto suggests a link between gut microbiota and psychopathic traits: stronger psychopathy scores correlated with higher abundances of Allisonella, Prevotella, and C. evryensis and lower levels of T. vincentii. The findings are correlational and based on a small, self-reported sample, so causality cannot be established; authors caution that further, cross-regional research is needed to understand the microbiome–brain connection and potential bidirectional effects.