Researchers at Duke-NUS Graduate Medical School Singapore found evidence that the less older adults sleep, the faster their brains age.
These findings pave the way for future work on sleep loss and its contribution to cognitive decline, including dementia.
The researchers examined the data of 66 older Chinese adults, from the Singapore-Longitudinal Aging Brain Study. Participants underwent structural MRI brain scans measuring brain volume and neuropsychological assessments testing cognitive function every two years.
Additionally, their sleep duration was recorded through a questionnaire. Those who slept fewer hours showed evidence of faster ventricle enlargement and decline in cognitive performance.
To learn more, see June et al. (2014). Sleep duration and age-related changes in brain structure and cognitive performance. SLEEP, 37(7).