[Bariatric surgery. Would you undergo surgery again?].

The authors analyze the negative repercussions of morbid obesity; then they explain what baryatric surgery, a surgical technique employed with a high degree of success, consists of. They study the results, in terms of satisfaction, obtained from patients operated on in the Txagorritxu Hospital in Vitoria. The project on which this article is based was presented as a Main Project in a Course on Health Research Methodology, extension class section, "IDER", at the University of Alcalá and the University of Antioquia.