Exercise helps to flush a toxic molecule from the brain and causes a beneficial one to move in and protect nerve cells, research on mice shows. The discovery might help to explain why staying fit and keeping mentally active seem to fend off Alzheimer’s disease in humans.
“Our experiments support the idea that exercise is a good approach to all types of problems in the brain and that a sedentary lifestyle is a risk factor,” says Ignacio Torres-Aleman, who led the study at the Cajal Institute in Madrid.
NewMexiKen wonders if one can fool one’s own brain. Repeat after me: Surfing the web is just as athletic as surfing the Pacific.