The Gut-Brain Axis and the Psychobiome
The gut-brain axis, a bidirectional communication between gut microbiota and the central nervous system (CNS), may play a role in cognitive function, digestion, and mood. Studies show that 80-90% of the fibers in the vagus nerve are linked to the gut, providing a physical link through which the gut microbiota communicate with the brain. Relatedly, the term psychobiome is used to describe the interaction between a person’s collective microbiome and their mental state. A diverse and balanced microbiome can help maintain the gut-brain axis. A psychobiotic is used to describe the commensal bacteria that play a role in the gut-brain axis and support brain health.