After 20 years of sleeve gastric surgery, there may be sequelae such as weight rebound, stomach enlargement and hair loss. 1. Weight rebound: If patients do not pay attention to diet control after surgery, often overeat or eat high-calorie and high-fat food, 20 years after sleeve gastric surgery, patients’ weight will also rebound. 2. The stomach becomes bigger: the size of the stomach becomes bigger, mainly because the number of cells in the stomach wall increases and the cell volume of the stomach wall becomes bigger. After the sleeve surgery, a few cells of the stomach lining are left, and at the same time, the size of each cell of the stomach lining is limited. Therefore, 20 years after the sleeve surgery, the stomach may still be enlarged, but only to a limited extent. 3. Hair loss: After sleeve gastric surgery, if the proportion of nutrition is poor for a long time, resulting in the lack of micronutrients, there may be symptoms of hair loss 20 years after sleeve gastric surgery. There are other symptoms of the sequelae of sleeve gastric surgery, you need to pay attention to improve the bad eating habits, control the diet structure, regular postoperative review, so as to avoid the sequelae of the adverse effects on the body.