4.8x

Times greater odds of dying of cancer among people with severe sleep apnea, compared with those who don’t have the condition, according to an 18-year study of 1,500 adults. Sleep apnea occurs when breathing is halted during sleep — a problem that is more common among obese people — resulting in frequent nighttime awakenings. The [...]

Going Bump in the Night: Sleepwalking Is More Common than Previously Thought

John Rensten / Getty Images

A recent study finds about 8.5 million U.S. adults wander during the night.

Is ‘Social Jet Lag’ Making You Fat?

Lifestock / Getty Images

If you need an alarm clock to wake up on weekdays and find yourself sleeping in on weekends, you’re probably suffering from “social jet lag.”

Getting More Sleep at Night May Help You Keep Slim

Ray Kachatorian / Getty Images

Getting some extra z’s each night could dampen the effect of genes that predispose you to weight gain, a recent study from University of Washington in Seattle finds.

30%

Percentage of American workers — that’s 40.6 million U.S. adults — who are getting 6 hours of sleep or less per night. The National Sleep Foundation recommends 7 to 9 hours a night. Most at risk of sleep-deprivation: night shift workers, especially in the transportation, warehousing and health care industries. Divorced, separated or widowed people [...]

The Healthland Podcast, Special Edition: Sleep

Tom Schierlitz / Getty Images

This week we bring you a special edition podcast about sleep — but we promise it’s a wide-awake listen! TIME senior editor Jeffrey Kluger explains why your brain may be at its most creative while you sleep, and TIME senior writer John Cloud shares surprising research on war veterans’ nightmares. Click the play button below [...]

Shhh! Genius at Work

Getty Images

In this week’s issue of TIME, we explain why the brain does its most creative work while you’re asleep. Subscribers can read the full story here.

6 to 8 hours

Amount of nightly sleep that confers the lowest heart risk, according to a new study. People getting less than 6 hours a night were twice as likely to have a stroke or heart attack and 1.6 times more likely to have congestive heart failure than those who slept more. People who slept too much — [...]

5 Ways to Survive Daylight Saving Time

Getty Images

It’s that time of year again: don’t forget to turn your clocks an hour ahead on Sunday. And follow these guidelines for coping with the loss of precious shut-eye.

Study: Sleep Gets Better with Age

Nisian Hughes / Getty Images

Sleep deprived? Just wait ’til you’re 80. A new study finds that elderly folks sleep better than anyone.