Wasting of the body of a person taking tuberculosis medicine may be caused by aggravation of the disease or diabetes, hyperthyroidism, gastrointestinal disease, liver disease and other reasons. 1. aggravation of the disease: body wasting is one of the symptoms of tuberculosis; in addition, tuberculosis is usually manifested as low fever, night sweating (sweating abnormally after going to sleep, and the sweating stops after waking up), fatigue, coughing, hemoptysis, etc. In order to understand the condition, chest X-ray, blood test and other related tests are needed. 2. Diabetes mellitus: it is a common cause of body wasting, patients are often accompanied by eating too much, drinking too much, thirst, urinating too much and other symptoms. 3. Hyperthyroidism: because of the patient’s high metabolism, it is easy to appear body wasting. 4. Gastrointestinal disease: It may be caused by improper diet or eating anti-tuberculosis drugs that stimulate the stomach, which may cause loss of appetite and body wasting. 5. Liver and gallbladder diseases: Liver and gallbladder diseases can also cause loss of appetite, malnutrition and emaciation. Patients are often accompanied by pain in the right upper abdomen, aversion to grease, jaundice and other such symptoms. People who take tuberculosis medication should actively seek medical attention to avoid further development of the disease, and patients should not use their own medication.