Updated

A new study indicates people who regularly sleep less than six hours a night have quadruple the risk of suffering a stroke than those who get seven or eight hours of sleep, USA Today reported.

The research, which included 5,666 adults, is the first to link lack of sleep to work, even among adults who are at a healthy weight with no other risk factors, lead author Megan Ruiter told USA Today.

According to statistics from the National Sleep Foundation, the number of people who report getting eight or more hours of sleep per night has decreased from 38 percent in 2001 to 28 percent now.  Another government study this year found that 30 percent of working adults get six hours of sleep or less.

The findings will be presented Monday at the 26th annual meeting of the Associated Professional Sleep Societies in Boston.

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