In fact, it is not easy for doctors to operate on obese patients, because many obese patients are very big, so doctors must stand on a stool to complete the operation, otherwise there is no way to open the chest for obese patients. Moreover, obese patients have a lot of fat in their bodies, so it is very difficult to accurately find the internal organs of obese patients, because all the internal organs of obese patients are surrounded by fat, so their internal organs are wrapped in fat, so doctors must cut this layer of fat if they want to complete gastrectomy. However, because the fat in obese patients is too thick, it is easy to hurt the internal organs when the scalpel is cut off. Therefore, doctors must concentrate when operating on obese patients, and doctors must never shake hands during the operation. If their hands tremble, it is easy to lead to the life-threatening of obese patients.

Moreover, the cardiopulmonary function of many obese patients is not very good now, so when operating on obese patients, you should not inject too much anesthetic, otherwise you may have difficulty breathing. In fact, the main reason why so many obese patients in China need surgery now is that they can't lose weight through normal methods, so they can only choose surgery and then cut off part of their stomachs, so as to control their appetite and achieve the effect of losing weight.

However, obese patients who have undergone this kind of gastrectomy are often prone to malnutrition in daily life, because after a part of the stomach is removed, the body's ability to absorb nutrients will decrease, so they can't absorb all the nutrients in the food like normal people, and can only absorb part of the nutrients in the food. Therefore, these obese patients who have undergone gastrectomy can only eat some nutritious food in their daily life.