Methods of detecting and treating cognitive impairment are provided. The methods involve determining, via a metagenomic analysis, the salivary and/or gut microbiota signature of the subject, e.g. a subject with an illness such as chronic liver disease and/or post-traumatic stress disorder (PTSD), and based in the microbiota signature, identifying subjects who have cognitive impairment.
SALIVARY AND GUT MICROBIOTA TO DETERMINE COGNITIVE INPAIRMENT