Dementia sleep link

SLEEPING for more than nine hours a night could be an early warning sign of Alzheimer’s disease.

Scientists found that people who consistently spend this long in bed were twice as likely to develop dementia over the next decade.

A change in sleep patterns is a red flag for Alzheimer’s, as it could suggest the brain has suffered damage.

Those who slept for nine hours or longer also had brains with smaller volumes, took longer to process information and showed signs of memory loss, the US researchers found.