At present, there is no masterstroke to prevent Alzheimer’s disease, but it is very important to prevent this disease through some healthy habits, such as lowering blood pressure, lowering blood sugar, lowering fat treatment, and avoiding exposure to drugs that may induce this disease. 1. Lowering blood pressure, sugar and fat: monitor your blood pressure and blood sugar at home and take antihypertensive drugs as prescribed by your doctor. Quit smoking and drinking, and stay away from second-hand smoke. 2. Avoid contact with drugs that may induce the disease: for example, do not abuse anticholinergics, antihistamines, opioids, and minimize contact with pesticides. 3. Protect the head and avoid traumatic brain injury. Elderly people with a history of traumatic brain injury should undergo cognitive training as early as possible. 4. Physical activity: Moderate-intensity exercise is safe for most adults. At least 150 minutes of moderate-intensity aerobic exercise, such as tai chi and jogging, per week. 5. Weight control: People under the age of 65 should maintain or lose weight so that the body mass index (reaches and stays within the range of 18.5 to 24.9 kg per square meter. 6. Ensure sufficient and good sleep: regular work and rest, early to bed and early to rise, and consult the doctor and treatment in case of sleep disorders. 7. Mediterranean Diet: Vegetables, legumes, fruits and whole grains as the main food, with a small to medium amount of fish, poultry and dairy products, as well as a small amount of red meat. Reduce saturated fat and trans fat intake. 8. Increase social and cerebral activities: e.g. attending senior universities, reading, calligraphy, painting, playing musical instruments, attending friends’ gatherings, group vacation trips, etc. When Alzheimer’s disease occurs, it is necessary to actively consult the doctor and follow the doctor’s instructions for reasonable treatment.