Sleeping In Greatly Increases Your Risk Of Stroke, Study Finds
Staying in bed for more than nine hours a night increases your risk of stroke by 23 per cent.
Research published in the Neurology journal has revealed that by sleeping nine hours or longer a night, you are almost a quarter more likely to suffer a stroke than those who sleep eight hours or less.
The scientific study was conducted in China and recorded the health patterns of 31,750 participants, with an average age of 62. The selected participants did not have a history of stroke or any other major health issue at the beginning of the tests, and were recorded for an average of six years.
Using physical examinations and self-reported data, researchers deduced that there was a rapid risk increase among those who not only slept, but laid in bed for an extended number of hours.
Risk of stroke jumped an astonishing 23 per cent for those who were in bed for nine or more hours, compared to those who slept for seven or eight hours a night.
The same study also found that napping at midday for more than 90 minutes can heighten your risk by 25 per cent, as opposed to those who nap 30 minutes or less or not at all.
Those who pack the most sleep into their days fared even worse. Combining more than nine hours of sleep with 90 minute naps can see your chances of suffering a stroke rise by a dangerous 85 per cent.
Author of the study, Dr Xiaomin Zhang, pressed that while the research was effective in uncovering patterns, it did not conclusively reveal the exact link between strokes and sleep.
"More research is needed to understand how taking long naps and sleeping longer hours at night may be tied to an increased risk of stroke," Dr Xiaomin Zhang wrote.
But previous studies have shown that long nappers and sleepers have unfavourable changes in their cholesterol levels and increased waist circumferences, both of which are risk factors for stroke.
"In addition, long napping and sleeping may suggest an overall inactive lifestyle, which is also related to increased risk of stroke."
The Chinese study is another step towards uncovering what precise factors can cause the life-threatening medical emergency.
According to the Brain Foundation, 55,000 Australians have strokes annually -- 73 per cent of these being first-ever strokes.
Of every 100 stroke patients in Australia, about 30 will die in the first year after their stroke, most (15-20) within the first 30 days.
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