Some common chronic diseases are the long-term effects of bad dinner habits. So, how should we eat dinner? First, have dinner early. Eating dinner early is a good health care policy recommended by medical experts. Studies have shown that eating early for dinner can greatly reduce the incidence of urinary calculi. There is a lot of calcium in dinner food. In the process of metabolism, part of calcium is absorbed and utilized by the small intestine, and the other part is filtered to the glomerulus and excreted through the urinary tract. The peak of calcium excretion usually occurs 4-5 hours after meals. If dinner is eaten too late, when people fall asleep at the peak of calcium excretion, urine will stay in the urinary tract such as ureter, bladder and urethra, and cannot be excreted in time, resulting in an increase in calcium in urine, which is easy to deposit and form small crystals. Second, the essence of dinner is eating. Dinner must be vegetarian, mainly with carbohydrate-rich foods, especially some fresh vegetables, and try to reduce the intake of protein and fatty foods. However, in real life, due to the relatively sufficient preparation time, most family dinners are very rich, which is not conducive to health. If protein is ingested too much, it will stay in the intestine if it cannot be absorbed by the human body, and it will deteriorate to produce toxic substances such as ammonia, indole and ammonia sulfide, which will stimulate the intestinal wall and induce cancer. If you eat too much fat, your blood lipids will increase. A large number of clinical medical studies have confirmed that the blood lipid of people who often eat vegetarian food for dinner is generally three to four times higher than that of people who often eat vegetarian food, while people with hyperlipidemia and hypertension will add fuel to the fire if they often eat vegetarian food for dinner. Third, eat less dinner. Eat less dinner than breakfast and Chinese food. It is generally required that the calories provided by dinner should not exceed 30% of the total calories in the whole day. Eating too many calories at dinner often leads to the increase of blood cholesterol, and too much cholesterol accumulates on the blood vessel wall, which will induce arteriosclerosis and cardiovascular and cerebrovascular diseases over time; If you eat too much at dinner, the concentration of sugar, amino acids and fatty acids in your blood will increase. After dinner, people tend to exercise less and consume less calories. These substances will be converted into fat under the action of insulin, and the body will gradually become obese after a long time.