We often use a balloon as a metaphor for our stomachs, which get bigger when we eat and become normal again after we don’t eat or digest food. Will a stomach that has been reduced in size after gastric resection still be enlarged and lead to regain weight? Our stomach is made up of muscles, which have a good stretching and contracting effect. When eating, the volume of the stomach becomes larger, ready to accommodate food in advance, and when the food is emptied, the stomach returns to its original form, and the intermuscular plexus in the stomach wall continuously issues basic electrical impulses to maintain the stomach in a slightly contracted state. The “small stomach” can still contract and expand according to the eating situation after the operation, because there is no change in the other functions of the stomach except for the significant reduction of the stomach volume. Even if we eat more food, most of the food in the stomach is only in the sinus and the lower part of the stomach body, and the other parts mainly serve to relieve the pressure of the stomach, and there is no food in other parts. The stomach can adjust its size according to the specific situation, even if we eat for a long time, it will not make the stomach bigger, and similarly, long-term hunger will not make the stomach shrink. Therefore, there is no need to worry that the stomach will be enlarged and lead to regain weight after gastric resection. Of course, the stretching ability of the stomach is very strong, but if you eat for a long time will have a negative impact on the gastric mucosa, and eventually damage their own health, so you need to cultivate good healthy eating habits, whether obese or not, healthy diet planning for the human body is beneficial but not harmful. Especially after gastric surgery people need to establish a balanced diet, gastric surgery can cure your obesity, but the most important thing is your own heart aspiring to health.