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 .
Vitamin status after bariatric surgery: a randomized study of gastric bypass and duodenal switch.
BACKGROUND Bariatric surgery is widely performed to induce weight loss . OBJECTIVE The objective was to examine changes in vitamin status after 2 bariatric surgical techniques . DESIGN A r and omized controlled trial was conducted in 2 Sc and inavian hospitals . The subjects were 60 superobese patients [ body mass index ( BMI ; in kg/m(2 ) ) : 50 - 60 ] . The surgical interventions were either laparoscopic Roux-en-Y gastric bypass or laparoscopic biliopancreatic diversion with duodenal switch . All patients received multivitamins , iron , calcium , and vitamin D supplements . Gastric bypass patients also received a vitamin B-12 substitute . The patients were examined before surgery and 6 wk , 6 mo , and 1 y after surgery . RESULTS Of 60 surgically treated patients , 59 completed the follow-up . After surgery , duodenal switch patients had lower mean vitamin A and 25-hydroxyvitamin D concentrations and a steeper decline in thiamine concentrations than did the gastric bypass patients . Other vitamins ( riboflavin , vitamin B-6 , vitamin C , and vitamin E adjusted for serum lipids ) did not change differently in the surgical groups , and concentrations were either stable or increased . Furthermore , duodenal switch patients had lower hemoglobin and total cholesterol concentrations and a lower BMI ( mean reduction : 41 % compared with 30 % ) than did gastric bypass patients 1 y after surgery . Additional dietary supplement use was more frequent among duodenal switch patients ( 55 % ) than among gastric bypass patients ( 26 % ) . CONCLUSIONS Compared with gastric bypass , duodenal switch may be associated with a greater risk of vitamin A and D deficiencies in the first year after surgery and of thiamine deficiency in the initial months after surgery . Patients who undergo these 2 surgical interventions may require different monitoring and supplementation regimens in the first year after surgery . This trial was registered at Clinical Trials.gov as NCT00327912
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 .