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

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

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 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 ...

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

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

Research indicates longer REM latency is associated with higher Alzheimer's biomarkers, pointing to its potential as an early indicator of neurodegeneration.

A new study showed that people who took longer to enter this dream phase of sleep had higher levels of amyloid beta and tau, ...

However, some research suggests that poor sleep could raise your risk of Alzheimer’s. A study published in November found ...