Sleep Duration & Dementia

One in three Americans do not get enough sleep, and 45% of the world’s population doesn’t either.

The US Centers for Disease Control and Prevention calls that a “public health problem,” because disrupted sleep is associated with a higher risk of conditions including diabetes, stroke and cardiovascular disease.
But what about dementia?
It is well known that people with Alzheimer’s suffer sleep issues. Insomnia, nighttime wandering and daytime sleepiness are common for them.
But could poor sleep earlier in life actually cause dementia?
The journal for the American Academy of Neurology, finds that people who get less REM, or dream-stage sleep, may be at higher risk for developing dementia. REM is the fifth stage of sleep, when the eyes move, the body heats up, breathing and pulse quicken and the mind dreams.