Gastric bypass surgery is a common way to lose weight in gastrointestinal surgery. When you want to lose weight quickly, you should also know some precautions for weight loss surgery. If you love beauty, you must cherish your body. To lose weight, you must do gastric bypass surgery in a reliable regular big hospital. Precautions for weight loss in gastric bypass surgery: 1. The operation for obese women will not affect their fertility. It takes about half a month from hospitalization to discharge. It is recommended that those who are going to do this operation take half a month off, which will give them plenty of time. You need to stay in hospital for about a week after the operation. According to the nature of work, you can do some housework and less activities after discharge, and you can recover in 1-2 months. The whole process of gastric bypass surgery usually takes about 2 hours. According to the patient's age and obesity, the older the patient, the longer the operation time. 6. The cost of the whole operation is 40,000-60,000 RMB. If there are complications after operation, the cost will be higher. At present, the occurrence of complications has been strictly controlled, and it is very rare. 7. Will eating less after operation lead to malnutrition? Because the empty gastrointestinal tract is determined according to personal conditions, there is generally no malnutrition, and from the past cases after surgery, there will be no malnutrition. If patients are too worried about this problem, they can take vitamin tablets to make up for it.