When might you get Alzheimer's? New gene test may tell

International researchers said Tuesday they have found a way to assess a person's genetic risk of developing Alzheimer's disease by a given age, a tool that could lead to better diagnosis and treatment.The report in the journal PLOS Medicine was based on genetic data from more than 70,000 Alzheimer's patients and elderly people without the disease participating in several major global studies on dementia.Alzheimer's disease is the most common form of dementia, affecting some 47 million people wo