Lack of sleep may be deadly, research shows - Reuters

People who do not get enough sleep are more than twice as likely to die of heart disease, according to a large British study released on Monday.

A 17-year analysis of 10,000 government workers showed those who cut their sleeping from seven hours a night to five or less faced a 1.7-fold increased risk in mortality from all causes and more than double the risk of cardiovascular death.

A third of the population of the UK and over 40 percent in the U.S. regularly sleep less than five hours a night, so it is not a trivial problem....