Sleep cycle troubles may be early sign of Alzheimer’s disease

Photo courtesy of wordpress.com A fitful night’s sleep and a habit of daytime catnapping may be an early-warning sign of Alzheimer’s dementia, according to new research conducted in humans and mice. Restless nights and sleepy days are a common pattern in patients with full-blown Alzheimer’s. Those disrupted circadian rhythms are a symptom that can upend the…