Currently, there is no definitive evidence about what can prevent Alzheimer’s disease or age-related cognitive decline. What we do know is that a healthy lifestyle—one that includes a healthy diet, physical activity, appropriate weight, and no smoking—can lower the risk of certain chronic diseases and boost overall health and well-being. Scientists are very interested in the possibility that a healthy lifestyle might delay, slow down, or even prevent Alzheimer’s. They are also studying the role of social activity and intellectual stimulation in Alzheimer’s disease risk.
For more information, read the NIA booklet Preventing Alzheimer’s Disease: What Do We Know? and visit the web page About Alzheimer’s Disease: Risk Factors and Prevention.