- •The association between bariatric surgery (BS) and the prevention of type 2 diabetes (T2D) and its complications in patients with obesity has been rarely addressed in large nationwide database studies.
- •This nationwide study (French National Health Service database) shows that BS reduces the new onset of T2D in patients with obesity by 82%.
- •Sleeve gastrectomy and Gastric bypass give comparable results and both are more effective than adjustable gastric banding.
The association between bariatric surgery (BS) and the prevention of type 2 diabetes (T2D) and its complications in patients with obesity has been rarely addressed in large, nationwide database studies.
To estimate the preventive effect of BS against T2D and its vascular complications in patients with obesity without co-morbidity at baseline.
All French public and private hospitals.
Data were extracted from the French National Health Service database between 2008 and 2016. All patients with obesity aged 18- to 60-years old, free of T2D and major co-morbidities, and with at least 1 year of follow-up were analyzed. Patients who had undergone gastric bypass (GB), sleeve gastrectomy (SG), or adjustable gastric banding (AGB) were included in the BS group, and patients with obesity with no history of BS were considered as controls.
Of 328,509 patients with obesity, 102,627 had BS. Between 2009 and 2016, 9.7% (31,946/328,509) of patients had a diagnosis of T2D associated with morbid obesity, 13.2% of the control group versus 2.0% of the BS group (P < .001). BS was associated with favorable 8-year T2D event-free survival estimates of 92.3% in the BS group against 58.2% in the control group. The hazard ratio for the diagnosis of T2D was .18 (95% confidence interval, .17–.19) for the BS group versus controls, after adjustment on age, sex, body mass index, and baseline differences. A significant difference was found between the type of bariatric procedure (P < .001) with more T2D after AGB (4.5%) than after GB (1.2%) or SG (0.9%). T2D complications were more common in controls (P < .001) with multiple T2D complications occurring in 1% of patients in the control group and .1% in the BS group (P < 0.001). GB and SG were more effective than AGB.
This nationwide study shows that BS reduces the new onset of T2D in patients with obesity by 82%. SG and GB give comparable results and both are more effective than AGB.
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Published online: January 07, 2019
Accepted: December 28, 2018
Received in revised form: December 23, 2018
Received: November 5, 2018
© 2019 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.