Licensed from:www.healthday.com
Mon, May 02, 2011
For middle-aged adults, sleeping less than six or more than eight hours a night is associated with a decline in brain function, British researchers contend.The magnitude of that mental decline is equal to being four to seven years older, the researchers said."There is an expectation in today's 24-hour-a-day society that people should be able to fit more into their lives," said study author Jane Ferrie, a senior research fellow...
