Gut brain connection, illustration
Illustration showing the connection between the brain and microbiota of the gut. The gut-brain axis is the biochemical signalling that takes place between the gastrointestinal tract (GI tract) and the central nervous system (CNS). The relationship between gut flora and humans is not merely commensal (a non-harmful coexistence), but rather a mutualistic relationship. Research has shown gut flora may play a role in anxiety and mood disorders., by FERNANDO DA CUNHA/SCIENCE PHOTO LIBRARY
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