NPR: There's growing evidence that a lack of deep sleep increases the risk of Alzheimer's disease.
Scientists say that's because during deep sleep, the brain removes toxins associated with Alzheimer's. Matthew Walker at the University of California, Berkeley, says that's no coincidence....
Walker says the strongest evidence involves deep sleep. That's a time when dreams are rare, body temperature drops and the brain produces slow, rhythmic electrical waves. READ MORE
(Source: NPR, 11/16/2020)