The spleen and stomach are weakening and the function of transportation is diminishing. The weakness is easy to eat stagnation, and food stagnation is easy to cause deficiency, which is the cause and effect of each other, resulting in the lack of “the source of Qi and blood biochemistry”, the loss of nourishment of the organs of the five organs, and the loss of intelligence. Or phlegm and dampness are born inside the body, and the clear orifices are closed and the disease is dementia. Therefore, adjusting the diet can prevent the occurrence of dementia. The elderly diet “should be less and avoid more”, “should be vegetarian and avoid meat”. Fresh vegetables contain a variety of vitamins, inorganic salts, etc., fishy meat containing cholesterol drunk, easy to cause obesity, hypertension, coronary heart disease, etc.; “soft and not hard”. Older teeth loose, digestive function is low, avoid eating too dry and hard food; “preferably light and avoid salty”. Too salty can increase the burden on the heart and kidneys caused by vascular sclerosis; “appropriate tea avoid alcohol and tobacco”. Tea can enhance vascular flexibility, elasticity and permeability, drinking tea can reduce blood lipids to improve circulatory function. Smoke can cause cancer, alcohol can help wet phlegm, you should quit smoking and alcohol; “appropriate wide avoid bias”. Diet should be diversified, a reasonable mix of food, eat more iron and calcium-containing food; “should be hot and not cold”, “should be fresh and not stale”. Not fresh food is easy to digestion and malabsorption. People live in a society with a more fresh fish and marine food, such as kelp, seaweed. Regular consumption of fruits, walnuts, pine nuts, etc., can prevent brain aging. Eat less salt, avoid using aluminum stove, to avoid a large number of aluminum salt deposited in the brain, the brain cells caused damage to the biological clock role, this rhythm of life must follow the laws of nature and the rhythm of the human body itself to arrange life, if long-term violation of this law body will be sick. Older people are depleted, physical strength is declining, and the ability to adapt is diminished. ”living with a regular” one should be based on each person’s age, physique, work, habits and other appropriate to develop a reasonable living system; two to arrange life, pay attention to adjust the indoor temperature and humidity, increase and decrease clothing; three to create a good living environment, such as planting flowers, planting trees to regulate the air, pleasant mood, people live in a beautiful environment People living in a beautiful environment, not only can prolong life, the prevention of Alzheimer’s disease is also beneficial.