Studies show that the main reasons for weight loss are: 1) poor appetite, picky eaters, anorexia, long-term unwillingness to eat, and indigestion. 2) Being able to eat and sleep, the gastrointestinal absorption function is poor, it is useless to eat various supplements or nutrients, and the absorption and utilization of nutrients are not good. 3) Slow growth, incomplete absorption and digestion of various nutrients. 4) Long-term sleep is not good, the body can't get enough rest, and physical energy consumption is too large. Thin people are mostly yin deficiency. To promote the normal development and metabolism of the body and make the body strong in an all-round way, we must fundamentally and thoroughly eliminate the causes of emaciation. If you are not sick, especially the endocrine system, such as intestinal parasites, long-term active tuberculosis, anemia, diabetes, hyperthyroidism, malignant tumors, hypopituitarism and some metabolic diseases. So: 1 To regulate the function of the spleen and stomach, Chinese medicine believes that the spleen governs transportation and transformation, and food should be digested and absorbed well. Eat more spleen-strengthening foods, such as yam, crucian carp, red dates, etc., and it is best to ask Chinese medicine to prescribe a prescription; 2. People often say that "a horse has no night grass and is not fat". The operation of human biological clock shows that the functions of human organs are basically weak after nine o'clock, which is the time to accumulate fat. Eat supper after nine o'clock every day, mainly high-calorie food. Protein won't make you fat, but sugar will make you fat. Be careful not to eat frozen rice. It takes five hours for a normal dinner to be fully digested. This excess heat will accumulate under the skin for a long time and obesity will come. 3. Eat snacks at ordinary times, the fragrance can relax the spleen. Popular: KFC, French fries and coke beer. Eating hawthorn, pork belly, etc. is helpful for digestion and absorption. Good spleen and stomach function is fundamental. Proper physical exercise is helpful to improve the function of various organs in the whole body. Attachment: 15 kinds of high-calorie foods: whole wheat soda cake 506 calories canned juice: 255 calories (one can) potato chips: 548 calories, chocolate: 586 calories, ordinary cola: 168 calories, beer: 147 calories (one can) hot dog sausage: 307 calories. Croissant: 375 kcal, chestnut meat: 2 12 kcal, canned coffee: 127 kcal (one can), yuba: 457 kcal (all the above solid foods are 100g).