To Stop Brain Shrinkage, Start Moving

Couch potatoes beware: Physical fitness during middle age may be a driver of brain health later in life, according to the results of a new study. The brain shrinkage was small but significant enough to raise the participants' risk of memory loss and dementia, the researchers said. The research tapped into data from the Framingham Heart Study, an ongoing program that has followed the lives of thousands of ordinary people over the course of nearly 70 years and three generations.