If the baby’s body appears thin: 1, generally due to malnutrition, when the child’s spleen and stomach function is low, the food eaten can not be digested and absorbed, can not be converted into food calories and nutrition supply to the whole body, so that the slow growth of body organs will appear thin. 2, if the baby suffers from some chronic digestive tract diseases, such as chronic gastroenteritis, chronic diarrhea and other diseases, it is The baby’s body will not be able to digest the food it eats, and it will probably have the symptom of continuous thinness. 3, some babies are suffering from parasitic diseases of the gastrointestinal tract, because parasites live in the intestines and absorb the body’s nutrients, even if the baby takes in a lot of nutrients, they will be absorbed by the parasites, so that the baby becomes thin and 4, and genetics also have a certain relationship. If the parents are thin, the baby may also be thin.