There's more than one reason to aim for a good night's sleep.
November 22, 2013 Missing out on good quality sleep has emerged as a real medical issue. Now Harvard researchers say men who had trouble falling asleep were more likely to die prematurely than men who said they could doze off easily. There's no proof sleeplessness caused an increase in mortality, but the association was strong.
All in the name of science: Volunteers hike in Colorado during their one-week hiatus from electrical lighting.
Courtesy of Kenneth Wright
August 1, 2013 A week out in nature — away from electrical lights — quickly resets the body's internal clock, scientists say. And it helps night owls who have problems waking up be more alert in the morning. The findings suggest some easy ways to help everyone hop out of bed with more energy.
A towel covers the face of a man in a geriatric day care facility of the German Red Cross at Villa Albrecht in Berlin.
Carsten Koall/Getty Images
March 22, 2013 Acting out dreams in your sleep may put you at risk for developing dementia later in life, researchers say. The behavior appears to portend Lewy body dementia, the second-most common form of dementia among older people.
August 27, 2012 Researchers have found an association between sleep problems among older adults and dementia later in life. If diagnosed early, treatments like controlling stimuli before bed can help and possibly reduce the risk of cognitive decline.
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