Background: Bariatric surgery depends on complete preoperative study of morbid obesity, in order to obtain the treatment of choice, A multidisciplinary group was founded in 1998 at the University of Siena. Methods: During 1998, 16 patients, with median weight 121.8 +/- 31 kg and median body mass index (BMI) 43 +/- 6, underwent bariatric surgery. A multidisciplinary assessment was used in order to evaluate psychological status, food intake problems and patient compliance, and hemodynamic, respiratory, metabolic and arthritic functions, 13 patients were submitted to laparoscopic surgery: in 11 adjustable gastric banding was performed and 2 were submitted to a vertical gastroplasty plus adjustable gastric banding. Three patients were operated via traditional laparotomy, due to previous abdominal surgery in 2 cases (submitted to an adjustable gastric banding) and one woman was submitted to a bilio-intestinal bypass according to the Hallberg technique, for her psychiatric troubles and coexisting systolic hypertension and uncontrolled diabetes. Monthly follow-up for each patient continues after 6 months. Results: No morbidity or mortality has occurred. The median weight loss at three months, was 19.5 kg. Two cases required injection of 1 ml more of fluid into the port, respectively at 4 and 9 months. Fifteen days after surgery, seven patients (46%) had vomiting episodes, due to rapid food intake. All patients have shown an improvement of their comorbidities after surgery. Conclusion: Early results via the multidisciplinary team and laparoscopic banding have been satisfactory thus far.