Dilution does not usually make a person thin. Dilution is the increase of intestinal capillary permeability caused by increased stool frequency. Short-term dilution, the body loss of water increases, weight loss, generally does not directly cause the body to lose weight, but the effective circulation of blood decreased, dilution stops after most of the weight back to normal. If a long time dilution, may be some chronic diseases, such as chronic enteritis and so on. This kind of disease will cause the gastrointestinal tract digestion and absorption ability to decline, unable to absorb the nutrients in the food, may cause malnutrition and lead to wasting. Rare may be caused by abdominal cold, indigestion, intestinal flora imbalance, acute gastroenteritis, chronic enteritis, etc. It is recommended that the patient consult a doctor in time to identify the cause of the disease and follow the doctor’s instructions for treatment.