Among different therapeutic strategies that are considered for obesity, like diet and change of lifestyle, bariatric surgery is considered as a last resort option, especially for patients suffering from morbid obesity. The surgery is intended especially for patients with comorbidities and quality of life impaired by excess weight and who meet the eligibility criteria defined by the guidelines. Bariatric surgery was developed in the early 1950s to treat obesity. Since then, a number of operative techniques with different mechanisms have emerged, but the interventions that pass the time test are gastric bypass (BPG) and sleeve gastrectomy (SG). Around the world, the number of patients who benefit from this type of intervention is increasing significantly from year to year (1).