Bad liver and gallbladder usually cause indigestion, fatigue, nausea and vomiting, loss of appetite, abdominal distension, and poor appetite, which are usually caused by hepatitis, fatty liver, liver cancer, and so on. 1. Hepatitis: Hepatitis is generally a viral hepatitis caused by various hepatitis viruses, which is usually caused by viral infection, decreased immunity, etc. Patients may experience nausea, vomiting and other symptoms. In addition, there are alcoholic hepatitis, drug hepatitis and so on. 2. Fatty liver: Fatty liver is a disease caused by excessive accumulation of fat in liver cells due to various factors, usually caused by obesity, malnutrition, etc. Patients may have symptoms such as fatigue, weakness and loss of appetite. 3. Liver cancer: Liver cancer is generally a malignant tumor of the liver, usually caused by genetic factors, viral infection, etc. Patients may have symptoms such as loss of appetite and abdominal distension. If there is any discomfort, patients should go to the hospital as soon as possible to find out the cause of the disease and treat it under the guidance of doctors.