Description of the disease (onset, main symptoms, hospital visited, etc.): Male, 25. picky eater since childhood, poor appetite. Poor absorption function and severely thin body. He is in good physical condition. Is there really no way to improve congenital malnutrition later in life? Can you drink Chinese medicine to regulate it. I had a liver function test and everything was fine. I’m not sure if there are any problems with the stomach or intestines. I have never seen it. Can you give some good treatment advice. I hope to find out the cause of the disease. I really want to eat well and have a good body. If the body is thin without other diseases, on the one hand, with your love of picky food, eating less, on the other hand, with genetic related. It is recommended that you change your habits, diet and sleep regularly, and if necessary, take some Chinese medicine for regulation.