Surgical procedures for treatment of morbid obesity have increased in recent years exponentially. It states that these procedures are not under the current paradigm that underlies surgical practice. The widespread use of some of these procedures has not been preceded by pilot studies and the vast majority of relevant publications have methodological shortcomings. This has led to not have optimal results on efficacy and safety. Until they have clearly the efficacy and safety of these procedures should be practiced strictly according to the mandates of ethics in clinical research.