The size of the brains of healthy people allow to predict who will get sick of Alzheimer’s or accuse related symptoms of dementia and cognitive decline. This is ‘the discovery of Bradford Dickerson of Massachusetts General Hospital in Boston in a research published in the journal Neurology. 159 older people under scrutiny, in which where noted a narrowing of some areas of the brain. After 3 years you are sick of dementia with members at high risk, with a high degree of shrinkage. After 3 years of the start of the test people who are sick of dementia were mostly members of high risk, with a high degree of shrinkage.