Gut And Brain

Scientific American: A New Connection between the Gut and the Brain - A surprising way that diet leads risks of stroke and cognitive impairment By Jonathan D. Grinstein

The researchers used mice, and found that immune responses in the small intestines set off a cascade of chemical responses reaching the brain’s blood vessels, reducing blood flow to the cortex and hippocampus, two brain regions crucial for learning and memory. This, in turn, brought a decline in tests of cognitive performance.