(University of California - Berkeley) PET brain scans of healthy older adults show that those reporting lower sleep quality through their 50s and 60s have higher levels of tau protein, a risk factor for Alzheimer's disease. Previous studies link poor sleep to beta-amyloid tangles also, suggesting that protein tangles in the brain may cause some of the memory problems of AD and dementia. In addition, out-of-sync brain waves during sleep are associated with tau, providing a possible biomarker of dementia.
from EurekAlert! - Social and Behavioral Science https://ift.tt/2NgIOIm
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