Too much sleep can hurt cognitive performance, especially for those with depression

Sleeping nine hours or more per night is associated with worse cognitive performance, which is even more the case for those with depression, a study led by researchers at The University of Texas Health Science Center (UT Health San Antonio) shows.

They derived the results from an examination of sleep duration and cognition in 1,853 dementia-and-stroke-free participants in the Framingham Heart Study, which is an ongoing…