An association between oral microbiota and cognitive performance in schizophrenia has been reported by researchers at Science Tokyo. By analyzing saliva samples and cognitive test scores from patients with schizophrenia and healthy controls, the study shows that lower oral microbial diversity is associated with poorer cognitive function, with specific predicted microbial metabolic pathways potentially linked to this relationship. These association patterns offer testable hypotheses for future longitudinal and experimental studies.
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In schizophrenia, altered oral microbiome may signal cognitive impairment
January 29, 2026
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