Changing ‘body clock’ in early Alzheimer’s

Alzheimer’s disease scientists at Washington University in St. Louis researching early clues that the disease may be developing recently pinpointed one: changes or disturbances in circadian rhythm, or “body clock.”  Their recent study found that circadian rhythm changes which cause disrupted sleep can occur as many as 20 years before Alzheimer’s symptoms begin … and well before any memory problems occur.