Greasiness may not necessarily be caused by liver disease, but may also be caused by other reasons, such as gallbladder and bile duct diseases, gastrointestinal diseases and pregnancy reactions in women, etc. 1. Liver disease: The digestion of greasy food requires the help of bile, and the liver is the place where bile is synthesized. If liver disease occurs, the synthesis and secretion of bile will be impaired, and it will not be able to fully digest fatty food, which will manifest as greasiness and abdominal distension. 2. Gallbladder and Bile duct disease: the gallbladder is an organ for storing bile. When eating fatty food, the gallbladder contracts and bile is discharged into the bile duct and then into the intestine to help digestion. If there is disease in the gallbladder or obstruction in the bile duct, such as bile duct stone, bile duct tumor, pancreatic head cancer compressing the bile duct, can cause bile can not reach the intestinal cavity smoothly, greasy food can not be digested, manifested as aversion to greasy; 3, gastrointestinal tract diseases: for example, chronic gastritis, gastric ulcer, due to gastric mucosa inflammation or gastric mucosa thinning, atrophy, gastric acid secretion is reduced or too much. Patients may experience nausea, epigastric pain, abdominal distension, anorexia, greasiness, etc.; 4. Pregnancy reaction: In early pregnancy, early pregnancy reaction may occur, manifested as loss of appetite, nausea, greasiness, etc. If there is anorexia, it is recommended to go to the hospital for examination as soon as possible to identify the cause and treat the cause.