What is a gastrectomy like? Even if you are not a medical professional, you can imagine the difference between the size of the esophagus and the size of the stomach inside your stomach. Gastrectomy is the removal of a part of the stomach, and the remaining part is about the same size as the esophagus. Gastrectomy is called “laparoscopic gastric sleeve resection”, and the whole operation is done minimally invasively with a laparoscope, which requires several holes in the stomach to put the camera lens and scalpel in. The doctor will remove 2/3 of the patient’s stomach under the belly through the computer monitor. You may think that this surgery is too harmful to the body, but in fact, on the contrary, compared to the traditional open approach, the laparoscopic approach is minimally invasive, with smaller surgical wounds and faster recovery. So, will the surgery have an adverse effect on the stomach afterwards? Is it possible for the stomach to get bigger after being cut? The increase in the number of cells in the stomach wall and the increase in the volume of the cells in the stomach wall are the main reasons why the stomach becomes larger. The total number of cells in the lining of the stomach is fixed, and the number of cells in the lining of the stomach decreases at the same time as the stomach is cut off. At the same time, the volume of each stomach wall cell becomes bigger is limited. Therefore, the size of the stomach may increase after the operation, but the enlargement is limited. Also, if you eat a little too much, you will immediately become nauseous and vomit. Does it cause malnutrition? The proportion of patients who have undergone gastrectomy for weight loss who are malnourished later in life is very small. Since most obese people were previously over-nourished. The patient absorbs less nutrients just after the surgery, and the large surplus of nutrients in the body is just enough to make up for it. Moreover, during the initial recovery phase after surgery, a professional health manager will develop a nutrition plan according to the patient’s physical condition. Gastric excision surgery is now increasingly accepted due to its significant weight loss effect and high safety and stability. Therefore, those who are still struggling with weight loss may want to try it.