QINGDAO, Shandong: People who have trouble falling asleep may be at increased risk of developing cognitive problems or dementia than their ...
QINGDAO, Shandong: People who have trouble falling asleep may be at increased risk of developing cognitive problems or dementia than their counterparts who sleep well, a research review suggests.
So-called sleep inefficiency, or spending too much time wide awake in bed, was associated with a 24 per cent greater chance of cognitive decline, the study team reports in Journal of Neurology, Neurosurgery, & Psychiatry."These findings suggested that sleep management might serve as a promising target for dementia prevention," said lead study author Dr. Wei Xu of Qingdao University in China.
Sleep difficulties might also lead cognitive problems by causing or exacerbating so-called cerebral hypoxia, or a reduction in oxygen supply in the brain, Xu added. Sleep apnea, a nighttime breathing disorder, was associated with a 29 per cent higher risk of cognitive problems, the analysis found.People who slept around six or seven hours a night appeared to have the lowest risk of cognitive disorders, while the risk was elevated for people who slept less than four hours or more than 10 hours a night.
"We still need more evidence to understand whether poor sleep leads to dementia and whether improving sleep can help mitigate risk." Just because people struggle with sleep, however, doesn't mean they're destined to have cognitive problems, said Dr Eric Larson of the Kaiser Permanente Washington Health Research Institute in Seattle.
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