Gut–brain axis
BIOCHEMICAL SIGNALING THAT TAKES PLACE BETWEEN THE GASTROINTESTINAL TRACT (GI TRACT) AND THE CENTRAL NERVOUS SYSTEM
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The gut–brain axis is the two-way biochemical signaling that takes place between the gastrointestinal tract (GI tract) and the central nervous system (CNS). The term "gut–brain axis" is occasionally used to refer to the role of the gut microbiota in the interplay as well.