What is Alzheimer?s disease: the facts, symptoms, factors, and causes

About 5 million Americans have Alzheimer’s disease. More than 50 percent of dementia cases are caused by Alzheimer’s disease. About 20 percent of 75-84 year old people have Alzheimer’s disease, and about 50 percent of those older than 85 have the disease.

Alzheimer’s disease is a progressive and degenerative disorder of the brain. The disease impairs [...] http://digg.com/u1ID9J