Prolonged rapid eye movement sleep latency may be an early indicator of Alzheimer’s disease and related dementias, according ...

We ask an expert why REM sleep is so important, what happens if we don't get enough of it and how to get more REM sleep.

A delay in getting to the rapid eye movement (REM) stage of sleep may be linked to Alzheimer's disease and related dementias, a new study indicates.

Summary: Delayed rapid eye movement (REM) sleep may be an early indicator of Alzheimer’s disease. Researchers found that participants with delayed REM sleep had higher levels of toxic proteins ...

It’s not a secret that sleep can get more difficult with age — research suggests that up to half of older adults complain of ...

A multiple sleep latency test (MSLT) is an objective way to measure sleep quality. It helps diagnose narcolepsy and insomnia.

A sleep expert details why you wake up groggy from a nap and how to make the most of your snack-sized slumber.

Health experts at one of the world's leading institutions have explained how understanding one thing about sleep can transform how you feel when you wake up. Scientists at Harvard Medical School in ...

What has puzzled researchers and philosophers for many centuries is the ‘why’ of sleep, along with the ‘how’. We human ...

Brain activity changes during the different stages of sleep. Sleep happens in an alternating pattern, divided into two different categories of sleep type: non-rapid eye movement (NREM), which is light ...

Alcohol is one of the most widely consumed substances in the world, and although many people use it to relax or socialize, its effects on sleep are often underestimated. While it m ...