People who spend less time in deep sleep or rapid eye movement (REM) sleep may be at greater risk for brain changes linked to ...

REM Sleep Behavior Disorder causes more than dream enactment—it’s a powerful clue to neurodegenerative disease risk.

Many people who experience sleep paralysis see frightening hallucinations some call "sleep paralysis demons." (Leah Abucayan, ...

A new soft contact lens monitors eye pressure and motion during sleep, helping detect glaucoma and other health issues.

New research found that the habit of snoozing your alarm in the morning is widespread, but experts warn that it's worse for ...

One in three Americans don’t get enough sleep. That can leave them at risk for negative health outcomes — so Julia Musto ...

Seasonal changes have long influenced human behavior, but one shift is especially noticeable — how much we sleep. As daylight ...

In TODAY.com's Expert Tip of the Day, a sleep scientist shares tips to break your snooze-button habit and get more quality ...

Sleep is essential for healthy functioning. Insomnia disorder is prevalent, affecting around 5 to 10% of the adult population ...