We usually decide together with our patients which method we should apply in obesity surgery or metabolic surgery. Of course, we also have certain medical criteria. In general, sleeve gastrectomy surgery is the appropriate method for the majority of obese patients, but in some cases, we may decide that one of the gastric bypass surgeries is more appropriate. If the patient has a large gastric hernia, a serious reflux, metabolic problems are at the forefront, for example, if there is an uncontrollable type 2 diabetes, if the hypertension is uncontrollable, we can recommend gastric bypass to our patients. Here, the patient’s weight, body mass index, comorbidities help us to make this decision.