Ever wonder why older people sleep less?

People in their 70s and beyond seem to need less sleep than they did when they were younger. New research from Beth Israel Deaconess Medical Center may finally explain why: They have lost sleep-promoting brain cells. Clifford Saper, the James Jackson Putnam Professor of Neurology and head of the Department of Neurology at Beth Israel Deaconess Medical Center, led the team of researchers.

Read full article