Before I was diagnosed with bipolar disorder, I didn’t think twice about sleep. I’d always been a night owl, but I went to bed reasonably early. And I never had trouble falling asleep or getting eight ...

A new study reveals that fragmented sleep causes cellular damage to the brain's blood vessels, providing further evidence to suggest that sleep disruption predisposes the brain to dementia. "We found ...

A study investigating potential subtypes of idiopathic hypersomnia (IH) found that patients with IH who experience unrefreshing naps have less fragmented sleep compared with those who take refreshing ...

A new study highlights how important uninterrupted sleep is to recovery after a traumatic brain injury, finding that fragmented sleep in injured mice is linked to a loss of rapid-eye-movement (REM) ...

Research suggests that disrupted or fragmented sleep after a traumatic brain injury not only interferes with the healing process but also has long-term consequences for brain health Millions of ...

Learn how sleep affects testosterone, what the research shows, how much sleep lifters need, and when low testosterone ...

SAN FRANCISCO -- People who have more interrupted sleep in their 30s and 40s are more than twice as likely to have memory and thinking problems a decade later, according to a new study. In the early ...

A new study highlights how important uninterrupted sleep is to recovery after a traumatic brain injury, finding that fragmented sleep in injured mice is linked to a loss of rapid-eye-movement (REM) ...

New research is reframing dreams not as random mental noise, but as one of the clearest signals of how well your body is actually resting. Here’s what scientists now know about dreams, REM sleep and ...