What to eat and what to pull the human body is very thin may be gastric diseases, intestinal diseases, consumptive diseases and other factors. 1. Gastric diseases: If you suffer from atrophic gastritis, duodenal ulcer, erosive gastritis and other diseases, it will easily lead to gastric mucous membrane damage, and the symptoms of what to eat and what to pull the human body is very thin. 2. Intestinal diseases: when the patient has ulcerative colitis, Crohn’s disease, etc., it is easy to lead to abdominal pain, diarrhea and other symptoms, what to eat and what to pull the human body is very thin phenomenon. 3. Consumptive diseases: If you suffer from malignant tumors, hyperthyroidism and other diseases, it is easy to lead to a decrease in appetite, affecting the normal digestion and absorption of food, what to eat and what to pull the human body is very thin phenomenon. Appearance of the above symptoms should go to the hospital in a timely manner, clear cause of the correct treatment under the guidance of the doctor.