Poor sleep in older people linked with more brain plaques

Although disturbed sleep has been previously linked to cognitive impairment, this is the first published association between self-reported sleep deficits and beta-amyloid deposition, measured in vivo on PET scan using a tracer carbon.

The 70 US patients, mean age 76 years, were community-dwelling participants in a longitudinal study of ageing.

The findings may pave the way for intervention trials to see if optimising sleep duration and quality can prevent or slow progression of Alzheimer’s disease, the authors said.