The vagus nerve brings information from all over the body to the brain — but is it being hacked by the bacteria in our gut?Some 80 per cent of the traffic along the vagus nerve is sensory information sent up to the brain by the body, and researchers are beginning to realise this has a significant influence on the mind. There is also now strong evidence from animal studies that the gut’s microbial residents — known as the microbiome — can activate the vagus nerve, with effects on brain and behaviour.

Source: Is Your Nervous System Being Hacked By Bacteria In Your Gut? | Gizmodo Australia