Frequent exhaustion is not necessarily cancer, and cancer is not directly related to exhaustion. For cancer of the digestive tract, most of the clinical manifestations are irregular abdominal pain, accompanied by abdominal distension, nausea, poor appetite and vomiting. There may also be black stool, bloody stool, change in stool habit, change in stool character, and anemia, emaciation, weakness, and mental discomfort in the advanced stage of cancer. Patients who are not sure about their health condition can visit the hospital and cooperate with the doctor to give perfect related examinations to help rule out cancer. If there are frequent symptoms of exhaustion, it is considered that there may be gastrointestinal dysfunction, such as indigestion. If necessary, gastrointestinal endoscopy can be completed to help understand whether there are digestive tract diseases.