Researchers have found a possible connection between strokes and oversleeping.

People who sleep more than eight hours a night are 46 percent more likely to suffer a stroke later in life, according to a study by the University of Cambridge in England.

The chance of having a stroke doubled among participants who slept the most during the study.

It was not clear if sleeping longer caused the strokes, or if people who were already at risk of suffering a stroke were more prone to sleeping longer.

Nearly 10,000 people took part in the study.