Pancreatitis does not cause a person to lose a lot of weight. Carditis is a type of chronic gastritis, which is an inflammation of the cardia. Some patients may have no obvious symptoms, while some may have a series of symptoms such as epigastric discomfort, nausea, vomiting, decreased appetite, acid reflux, and dyspepsia, etc. When such symptoms affect the intake of food, it will lead to a reduction in the amount of intake, and cause weight loss. In addition, the long-term existence of pancreatitis and the irritating factors have not been removed may also induce pancreatic cancer, and cancer is a kind of consumptive disease, which will also cause the body to lose weight. If the patient is old and has anemia, he/she should be alerted to the possibility of cancer. Patients who are diagnosed with carditis should actively cooperate with the doctor for treatment, and if they have a lot of weight loss, they should go to the hospital and ask the doctor to make a judgment and clarify the cause of the disease.