Surgery results in greater improvement in weight loss outcomes and weight associated comorbidities compared with non-surgical interventions , regardless of the type of procedures used .
When compared with each other , certain procedures result ed in greater weight loss and improvements in comorbidities than others .
Outcomes were similar between RYGB and sleeve gastrectomy , and both of these procedures had better outcomes than adjustable gastric b and ing .
For people with very high BMI , biliopancreatic diversion with duodenal switch result ed in greater weight loss than RYGB .
Isolated sleeve gastrectomy led to better weight-loss outcomes than adjustable gastric b and ing after three years follow-up .
BACKGROUND Bariatric ( weight loss ) surgery for obesity is considered when other treatments have failed .
The effects of the available bariatric procedures compared with medical management and with each other are uncertain .
This is an up date of a Cochrane review first published in 2003 and most recently up date d in 2009 .
OBJECTIVES To assess the effects of bariatric surgery for overweight and obesity , including the control of comorbidities .
Gastrointestinal function and eating behavior after gastric bypass and duodenal switch.
BACKGROUND Duodenal switch provides greater weight loss than gastric bypass in severely obese patients ; however , comparative data on the changes in gastrointestinal symptoms , bowel function , eating behavior , dietary intake , and psychosocial functioning are limited . METHODS The setting for the present study was 2 university hospitals in Norway and Sweden . Participants with a body mass index of 50 - 60 kg/m(2 ) were r and omly assigned to gastric bypass  ( n = 31 ) or  duodenal switch  ( n = 29 ) and followed up for 2 years . Of the 60 patients , 97 % completed the study . Their mean weight decreased by 31.2 % after gastric bypass and 44.8 % after duodenal switch . At inclusion and 1 and 2 years of follow-up , the participants completed the Gastrointestinal Symptom Rating Scale , a bowel function question naire , the Three-Factor Eating Question naire-R21 , a 4-day food record , and the Obesity-related Problems scale . RESULTS Compared with the gastric bypass group , the duodenal switch group reported more symptoms of diarrhea ( P = .0002 ) , a greater mean number of daytime defecations ( P = .007 ) , and more anal leakage of stool ( 50 % versus 18 % of participants , respectively ; P = .015 ) after 2 years . The scores for uncontrolled and emotional eating were significantly and similarly reduced after both operations . The mean total caloric intake and intake of fat and carbohydrates were significantly reduced in both groups . Protein intake was significantly reduced only after gastric bypass ( P = .008 , between-group comparison ) . Psychosocial function was significantly improved after both operations ( P = .23 , between the 2 groups ) . CONCLUSION Gastrointestinal side effects and anal leakage of stool were more pronounced after duodenal switch than after gastric bypass . Both procedures led to reduced uncontrolled and emotional eating , reduced caloric intake , and improved psychosocial functioning
Surgery results in greater improvement in weight loss outcomes and weight associated comorbidities compared with non-surgical interventions , regardless of the type of procedures used .
When compared with each other , certain procedures result ed in greater weight loss and improvements in comorbidities than others .
Outcomes were similar between RYGB and sleeve gastrectomy , and both of these procedures had better outcomes than adjustable gastric b and ing .
For people with very high BMI , biliopancreatic diversion with duodenal switch result ed in greater weight loss than RYGB .
Isolated sleeve gastrectomy led to better weight-loss outcomes than adjustable gastric b and ing after three years follow-up .
BACKGROUND Bariatric ( weight loss ) surgery for obesity is considered when other treatments have failed .
The effects of the available bariatric procedures compared with medical management and with each other are uncertain .
This is an up date of a Cochrane review first published in 2003 and most recently up date d in 2009 .
OBJECTIVES To assess the effects of bariatric surgery for overweight and obesity , including the control of comorbidities .