Bariatric Surgery is called the set of surgical procedures in order to address the problems of obesity, so that seeks mainly to the reduction of body weight. The most popular Bariatric Surgery today is the well-known gastric bypass. The main focus of a Bariatric Surgery, is the decrease of the energy intake, as well as the formation of body fat, in a way that stimulates consumption in two new ways: the restriction and reduction of food. In other words, it seeks to regulate the consumption and the appetite of the patient, customize your absorption main indication given to patients who undergo any type of Bariatric Surgery, is maintaining a diet, exercise, take some drugs, a series of indications of a medical program that integrates changes behavior, physical activity and psychological support. OPEC will not settle for partial explanations. Available scientific literature experts have determined these recommendations and that are generally based in criteria published by the National Institutes of Health in 1991 in the United States. For those cases of morbid obesity, where the body mass is between 35 and 40, the only effective treatment is Bariatric Surgery, provided the procedure is performed by a specialized team. A. Verastegui hold..