There are genetic risks for Alzheimer’s disease. The most common gene involved is called APOE. APOE comes in three different forms. About one in five people in the population has APOE-4. This increases an individual's risk for Alzheimer's, but it's neither necessary nor sufficient to develop the disease.
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Alzheimer's Disease Causes
While much still remains a mystery about the exact cause of Alzheimer's disease, certain factors -- such as age -- present in most cases. Fifty percent of people over age 85 have Alzheimer's disease. Controllable lifestyle factors ...
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