Medically reviewed by Sanja Jelic, MD A multiple sleep latency test (MSLT), also known as a daytime nap opportunity study, is ...

Keeping up with one hobby may regulate the body's 'circadian rhythm' that governs the sleep-wake cycle, a specialist told the ...

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

A new study has found that taking longer to reach the rapid eye movement (REM) stage of sleep is linked to a greater risk of ...

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

Veterans diagnosed with post-traumatic stress disorder may experience thrashing sleep, which can lead to more extensive ...

I asked Dr. Acostamadiedo what causes night terrors, hallucinations and other parasomnias, to get to the root of my recurring ...

Although there is no cure for narcolepsy, medication and lifestyle changes can help manage the symptoms. Medicines that ...

Groundbreaking study uncovers the crucial link between REM sleep patterns and Alzheimer's disease, providing new insights for ...

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.

Aside from Alzheimer’s disease, researchers excluded participants who had other neurodegenerative disorders like ... establish that delayed REM sleep is a cause of Alzheimer’s disease.