Lack of sleep contributes to numerous health issues like obesity, heart disease, mental problems etc. But do you know that oversleeping can be not less dangerous? According to recent research, sleeping more than eight hours a day can boost your risks of stroke development.
Stroke may occur, when arteries that carry blood to the brain tissue, get blocked. As a result, brain cells can't attain enough of oxygen, and begin to die off. Sometimes stroke develops as a result of artery rupture, when blood effuses to the brain and damage its cells.
High blood pressure, poor diet, diabetes, smoking, sedentary lifestyle, irregular heart rhythm are well-known risk factors of the stroke. Today we can add one more item to this long list. Scientists followed about 10 000 people between 42 and 81 over ten years.
During several years participants were asked about amount of sleep they have had each day.
It was found that nearly seven of each ten people slept six to eight hours daily. Whereas one in ten participants slept more than eight hours a day.
Actually women and older people were more likely to sleep less than six hours or more than eight hours per day.
Over the ten year-period of this study, 346 people experienced stroke. After systematization and adjustment of the results, investigators found that those, who prefered to sleep longer than eight hours a day, had a 46% higher risks of stroke than others.
At the same time participants, who slept no more than six hours per day, were at an 18% elevated risk.
Furthermore, research shows that stroke hazards were even higher in those, whose sleep duration had increased over the four years.
Scientists confirmed their find with combined data from eleven other international researches to determine a link between long sleep and raised risks of stroke occurrence.
However it's not clear enough, how sleep duration can influence on human's hazards of stroke development.
Specialists are not also sure, whether oversleeping is a symptom or a cause of cardiovascular disorder.
More studies are needed to ascertain the correlation and underlying reasons of sleep habits and stroke risks.
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