The gut and the brain are in constant communication: via nerve pathways, via the immune system, via hormones and via substances produced by gut bacteria.[1][3]
Research suggests that changes in the gut microbiome may be linked to mood, stress sensitivity, cognitive function and certain mental health conditions.[5][8] The gut microbiome may, among other things, influence the availability of substances involved in the production and regulation of neurotransmitters.[9] This is a complex field of research in which much remains unclear.[7]
A gut microbiome analysis does not provide a diagnosis and cannot establish or rule out mental or psychiatric conditions.[5][10]
