Doctors may recommend it for good health, but researchers now find that sleeping 8 to 9 hours a night doesn’t necessarily translate into a longer life.
Scientists came to that conclusion after analyzing medical and lifestyle data, including sleep reports, of 1.1 million people between ages 30 and 102 who had filled out questionnaires in 1982.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.