1 less. Three meals a day, seven minutes full is appropriate. As the saying goes, "if you eat enough, you will never get sick." Chinese medicine believes that "dual diet is harmful to the stomach." Gan, a centenarian, is an expert in otolaryngology of traditional Chinese medicine. He advocates ant food, that is, like ants, he is not picky about food and doesn't eat much.

2 Miscellaneous. Eat a little more miscellaneous, eat everything like this, rich in nutrition and complete. Neijing says: "Five grains are for nourishment, five fruits are for help, five animals are for benefit, and five vegetables are for supplement".

(1) Vegetarian food is the main collocation. Nutritionist Weng Weijian said that four legs are not as good as two legs, two legs are not as good as one leg, and one leg is a mushroom. Eating more mushrooms is good for people.

(2) The combination of coarse grains and flour and rice is considered as coarse grains. If you eat single flour and rice for a long time, it will easily lead to nutritional imbalance and weakened digestive function. Eating some sweet potatoes, pumpkins, potatoes, yams and miscellaneous beans can also prevent constipation. For the elderly who are weak and have poor digestive function, the ratio of flour to rice can be appropriately increased.

(3) acid-base collocation, mainly alkali. Generally speaking, animal foods are mostly acidic foods, while plant foods are mostly alkaline. You can eat some fresh Chinese cabbage, green vegetables, spinach and celery. Eat both acidic food and alkaline food, eat less acidic food and eat more alkaline food.

3 is light. That is, the diet should be light, and attention should be paid to limiting salt, oil and sugar. Salt is limited to 6 grams, oil is limited to 25 grams, and sugar is limited to 25 grams. These are the standard values of daily intake for everyone. Salt restriction can prevent hypertension, oil restriction can prevent hyperlipidemia or fatty liver, and sugar restriction can prevent hyperglycemia and reduce the risk of cholesterol metabolism disorder and cancer. It can also reduce the induction of heart disease and diabetes. Stay away from cardiovascular disease.

4 temperature. Avoid eating hot, cold and high-calorie foods. The diet should be warm, not too hot, in case of scalding the esophageal mucosa. Over time, it is easy to cause esophageal mucosal cell proliferation and induce esophageal cancer. Too cold food hurts the stomach and easily leads to digestive tract diseases. At the same time, we should pay attention to eating less high-calorie foods and more low-calorie foods. For example, vegetables are relatively higher in calories than meat, and red meat is relatively higher in calories than white meat. Cooking methods should also be paid attention to, mainly cooking, frying and smoking, or eating less pickled food.

Five is slow. Chewing slowly, reducing the burden of gastrointestinal tract and keeping the digestion and absorption function in a good and stable state are the guarantee of good health. Middle-aged and elderly people should feed on food, adjust their diet and nourish their spleen and stomach. Remember the above five-character formula, which can reduce diseases and prolong life.

There is no elixir, only the secret of prolonging life.