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Research was based on particpants' two overnight sleep studies that took place between 1995 and 1998, and 2001 and 2003, with their health analysed over the 17 years that followed
A 1% reduction in deep sleep per year for people 60 and older translates into a 27% increased risk of dementia.
Researchers say improving or maintaining deep sleep, also known as slow-wave sleep, in older years may help prevent dementia.
The study shows that 1% loss in deep sleep for people over the age of 60 can increase the risk of dementia by 27%. | Health
Monash study suggests that enhancing or maintaining deep sleep, also known as slow wave sleep, in older years could stave off dementia.