Patients with gastrointestinal dysfunction will lose weight because long-term gastrointestinal dysfunction will lead to digestive and absorption dysfunction, and patients often suffer from loss of appetite and reduced intake of food, which results in reduced intake of nutrients, and patients will lose weight. In addition, patients with gastrointestinal dysfunction often suffer from diarrhea, and prolonged diarrhea will also cause a large loss of nutrients in the body, which will lead to weight loss and emaciation. Gastrointestinal dysfunction patients usually need to develop good living habits and eating habits, diet should be regular, chewing slowly, avoid overeating, pay attention to the impact of emotions on the diet, do not eat when you are angry, keep a happy mood, appropriate rest, avoid prolonged tension, anxiety, depression, etc., long-term gastrointestinal dysfunction patients are recommended to seek medical treatment in a timely manner.