Dementia-Prevention Dementia is hard to prevent, because what causes it often is not known. But people who have dementia caused by stroke may be able to prevent future declines by lowering their risk of heart disease and stroke. Even if you don't have these known risks, your overall health can benefit from these strategies:

• Don't smoke.
• Stay at a healthy weight.
• Get plenty of exercise.
• Eat healthy food.
• Manage health problems including diabetes, high blood pressure, and high cholesterol.
• Stay mentally alert by learning new hobbies, reading, or solving crossword puzzles.
• Stay involved socially. Attend community activities, church, or support groups.
• If your doctor recommends it, take aspirin.

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