What is a sleep study? A sleep study, also known as a polysomnogram, is a diagnostic test that monitors various body functions while a person is asleep. It is most commonly used to diagnose sleep ...

Sleep has emerged as the most important factor for life expectancy bar smoking in a new study from Oregon Health & Science ...

IT IS HARD to overstate the importance of sleep. Regular hours of rest offer organisms of all sizes a chance to consolidate memories, repair cells and boost the health of their immune systems. But the ...

If you regularly have a hard time getting restful sleep, you may need a sleep study. Also called polysomnography, a sleep study is a test that's used to diagnose sleep disorders. The good news? A ...

It might be worth working a little bit harder to get that much-desired, but often elusive, good night's sleep. Deep sleep clears the mind of waste just as a "dishwasher" cleans dirty plates and ...

This story was featured in The Must Read, a newsletter in which our editors recommend one can’t-miss story every weekday. Sign up here to get it in your inbox. For most of my adult life, I’ve been ...

Share on Pinterest A new mouse study shows that more toxins and metabolites are cleared from the brain during awake time than during sleep. romaset/Getty Images A new study in mice suggests the ...

In the latest evidence of the direct relationship between sleep and health, researchers have found that chronic insomnia can significantly increase dementia risk. That equates to a three-year ...