Is Alzheimer's disease hereditary and can a person stop it?

Diet helps a lot, and keep active! You need to eat foods with a lot of antioxidants, such as blueberries, greens, etc. A vegan diet helps because it incorporates many antioxidant foods, but you don't need to go completely vegan to reap the rewards. Prevention is a big thing... if you take care of yourself early enough, dementia won't be too big of a looming possibility.