The goal of this study was to examine whether sleep disturbances in midlife and late-life were associated with a higher dementia risk in older adults. This was assessed through the use of two NEAR population-based studies: the Kungsholmen Project and H70 study, as well as the Finnish study CAIDE (Cardiovascular Risk Factors, Aging and Dementia).
Trouble falling asleep in midlife and waking up too early or long sleep duration in late-life were associated with a higher dementia risk
Individuals who had trouble falling asleep in midlife (age ≈ 50 years) and waking up too early or long sleep duration (>9 hours) in late-life were at an increased risk of developing dementia after the age of 70 years.
Photo of Shireen Sindi, first author of the study.
Reference: Sindi S, Kåreholt I, Johansson L, Skoog J, Sjöberg L, Wang HX, Johansson B, Fratiglioni L, Soininen H, Solomon A, Skoog I, Kivipelto M. Sleep disturbances and dementia risk: A multicenter study. Alzheimers Dement. 2018;14(10):1235-1242. doi: 10.1016/j.jalz.2018.05.012.