Mixed
Bariatric surgery (Roux-en-Y gastric bypass, vertical sleeve gastrectomy, biliopancreatic diversion) induces sustained weight loss and high remission rates for type 2 diabetes compared to non-surgical management.
For adults with severe obesity (BMI ≥35-40) who have not succeeded with lifestyle changes, bariatric surgery is the most effective intervention for sustained weight loss and type 2 diabetes remission. It involves surgical alteration of the stomach and/or intestines. Lifelong daily nutritional supplementation and regular medical monitoring are required to prevent deficiencies.
These procedures resulted in greater short term (1-2 years) weight loss (mean difference −26 kg; 95% confidence interval −31 to −21; P<0.001) and greater remission of type 2 diabetes (complete case analysis relative risk of remission: 22.1, 3.2 to 154.3; P=0.002; conservative analysis: 5.3, 1.8 to 15.8; P=0.003) compared with various non-surgical treatments.
Why this rating
Supported by multiple RCTs, meta-analyses, and large prospective observational studies (SOS, Utah).
Source
Bariatric surgery for obesity and metabolic conditions in adults
David Arterburn et al. · BMJ · 2014
DOI 10.1136/bmj.g3961
More from this paper
- Bariatric surgery reduces long-term all-cause mortality and the incidence of type 2 diabetes in obese adults.Good
- Bariatric surgery, particularly Roux-en-Y gastric bypass and vertical sleeve gastrectomy, is associated with an increased risk of substance misuse disorders, suicide, and nutritional deficiencies.Moderate
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
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