Studies show that Alzheimer’s may be evident years before symptoms
http://www.nytimes.com/2012/11/13/health/alzheimers-precursors-founds-at-earlier-age.html?_r=0
Researchers studying Alzheimer’s disease are finding clues that the brain may begin to deteriorate years before a person shows symptoms of dementia. New studies have found that the brains of people destined to develop Alzheimer’s clearly show changes at least 20 years before they have any cognitive impairment. This may lead to opportunities for early detection and treatment.
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