Lack of Sleep Doubles Risk of Heart Disease
Researchers suspect link between blood pressure, fewer Zs
By Rachel Kravetz,  Newser User
Posted Sep 24, 2007 4:57 PM CDT
While the correlation is not yet fully understood, scientists predict that lack of sleep effect on blood pressure may increase the risk of stroke and heart disease.   (Index Open)
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(Newser) – Getting 7 hours of sleep a night is best, and people who consistently sleep less are risking their lives, a new study says. Researchers followed 10,000 civil servants for 17 years and found that those who reduced their sleep from 7 hours a night to 5 or less doubled their risk of dying from heart disease, Reuters reports.

"A third of the population of the UK and over 40% in the US regularly sleep less than 5 hours a night, so it is not a trivial problem," one researcher said. The study, the first to link sleep duration and mortality rates, also showed lack of sleep increasing the risk of death from all causes.