A number of recent studies have found that bariatric surgery can improve diabetes or even reverse it. This meta-analysis looked at its use in people with type 2 diabetes who are obese but not severely obese.
In obese type 2 diabetics with BMI < 35, does bariatric surgery reduce improve glycaemic control?
The reviewers found thirteen trials involving 357 patients. According to their meta-analysis, bariatric surgery significantly reduced BMI and cholesterol and enabled 80% of patients to reach their target HbA1c. They also found that the benefits were sustained after prolonged period of foll0w-up.
Users of this research should consider:
- Did the reviewers make sufficient efforts to find all of the relevant evidence?
- Was there a comparison intervention? What outcomes would we expect from conventional treatment?
- Did they assess the quality of the studies and take account of the risk of bias?
- Was there any important heterogeneity between the studies?
- Although the reviewers did not find any reports of post-operative mortality, there were other major adverse effects.
Li Q, Chen L, et al. Metabolic effects of bariatric surgery in type 2 diabetic patients with body mass index < 35 kg/m2. Diabetes Obes Metab. 2012 Mar;14(3):262-70.