The purpose of this study is to compare the outcome in a broad perspective after laparoscopic Roux-en-Y gastric bypass and laparoscopic BPD-duodenal switch in the treatment of superobesity (body mass index \[BMI\] \> 50 kg/m2).
Inclusion Criteria: * BMI 50-60 kg/m2 Exclusion Criteria: * Prior obesity operation * Prior major abdominal surgical procedure * Severe disabling cardiopulmonary disease * Malignancy * Oral steroid treatment * Condition associated with poor compliance