Cappuccio and colleagues at the University College, London, gathered sleep data on 10,308 civil servants in the late 1980s and then again in the early 1990s. Of course, some of those government employees had died in the meantime, and so the researchers could factors out such variables as smoking, exercise, obesity and blood pressure and concentrate on how sleep might send us into the Big Sleep.
It seems that how much sleep the civil employees got (not at their desks, but in bed at night) played a part in putting them to sleep permanently.
Those who changed their sleep habits by cutting the time in bed from 7 to 5 or less hours were 1.7 times more likely to die, and twice as likely to die from cardiovascular problems.
Oddly enough, sleeping too much also turned out to be bad. Going from the standard 7 hours of sleep to more than 8 hours also upped the risk of death twofold.
This research suggests that we all should be getting 7 hours of sleep a night, and we should religiously stick to that quotient.
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