The orexin/hypocretin system, first identified in 1998, is now recognized as a central regulator of energy balance, sleep–wake states, and arousal ...

On World Sleep Day the message is clear, i.e., sleep is not a short break each night but a key part of keeping your mind ...

Millions of Americans are living with sleep disorders, which can cause a variety of serious health problems. And while insomnia can be easy to diagnose, other sleep disorders are more complicated.

A new study points to the importance of getting answers about why you can’t sleep.

These all-natural nutrients and supplements may be the key to improving your sleep.

Past age 50, men are much more likely to have REM sleep behavior disorder than women. Jose Luis Pelaez/Stone via Getty Images Every night, you go through four to five sleep cycles. Each cycle, lasting ...

Lack of sleep can affect your brain, heart, immunity, and overall health. On World Sleep Day 2026, know what really happens ...

Sleep medicine physicians break down how much REM sleep you should be getting each night, plus why it matters, and what it ...

Doctors routinely check blood pressure, diabetes and cholesterol. But they rarely ask a question that may be just as important: how well are you sleeping? As the world marked World Sleep Day on March ...

Eisai has launched a campaign to raise awareness of sleep disorders in Japan, via a partnership with smartphone app Pokémon ...