Alzheimer's Disease

Frequently Asked Questions

8. What causes Alzheimer's disease?

Scientists do not yet fully understand what causes Alzheimer's disease. It is likely that the causes include some mix of genetic, environmental, and lifestyle factors. These factors affect each person differently.

Learn more about the genetics of Alzheimer’s disease.

Increasing age is the most important known risk factor for Alzheimer's disease. Lifestyle factors, such as diet and physical exercise, and long-term health conditions, like high blood pressure and diabetes, might also play a role in the risk of developing Alzheimer’s disease.