If you’ve ever wondered whether your six hours of sleep are too few—or if your nine-hour snoozes are too indulgent—science has a surprising answer: it depends on where you live. A groundbreaking ...

For years, sleep has been framed as a basic pillar of good health. New research suggests it could be something even more powerful: a potential shield against Alzheimer’s disease. A study published ...

A study reveals that stable, moderate sleep patterns are linked to better health in older adults, while inconsistent or short sleep trajectories pose risks to physical, cognitive, and social ...

People who have had a stroke may be more likely to sleep too much or too little compared to those without prior stroke, according to a new study. The study does not prove that stroke causes abnormal ...

Females sleep less, wake up more often and get less restorative sleep than males, according to a new animal study by CU Boulder researchers. The findings, published in the journal Scientific Reports, ...

Sleep rarely feels like a simple number. The hours you spend in bed matter, but the feeling of waking refreshed often carries ...

Overnight bursts of brain waves seen in normal sleep can help doctors predict which unresponsive patients hospitalized with acute severe brain injuries will awaken and eventually recover. Several ...

While a solid eight hours of uninterrupted rest is the dream, Dr. Ruchir Patel, a triple-board-certified sleep physician, clarifies that waking up briefly is a standard part of the human sleep cycle.

February was heart month, and this is the fourth column in a series about the primary risk factors for heart attacks. Sleep apnea refers to periodic absence of breathing during sleep. There are two ...