Ways to prevent dementia are as follows: 1. A balanced diet is needed, more lean meat, less fatty meat, less meat skin, more shellfish, beans, seafood, don’t be too jealous, also eat more vegetables, appropriate fruit, don’t eat too sweet things. Maintain a better physical condition can avoid hypertension, diabetes, stroke, atherosclerosis; 2, dementia patients should pay attention to the regulation of emotions and will, pay attention not to be nervous, the more nervous the more likely to produce dementia. The more nervous they are, the more likely they are to develop dementia. Because they are anxious and frightened all day long, their blood pressure rises and their sleep quality is poor; 3. For the prevention of dementia on the one hand is the prevention of the three high, on the other hand to enrich themselves, reserve energy, improve intelligence dementia will naturally be far away.