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Updated: May 2, 2026

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Long-term diabetic response to gastric bypass
Stephen W Davies1, Jimmy T Efird2, Christopher A Guidry1
1Department of General Surgery, University of Virginia School of Medicine, Charlottesville, Virginia.
Gastric bypass surgery leads to significant weight loss and improved diabetes control in obese patients. While long-term diabetes remission rates vary, responsive patients show greater weight loss and lower HbA1c levels.
Area of Science:
- Bariatric surgery
- Endocrinology
- Metabolic disease management
Background:
- Rising rates of obesity and type II diabetes necessitate effective long-term treatment solutions.
- Bariatric surgery is a viable option, but long-term outcome data for diabetic patients remain limited.
Purpose of the Study:
- To evaluate the long-term efficacy of gastric bypass surgery in achieving diabetic remission.
- To analyze factors influencing diabetic response and remission after bariatric procedures.
Main Methods:
- Retrospective cohort study of 707 diabetic patients undergoing gastric bypass from 1998-2012.
- Patients categorized by postoperative diabetic response (remission vs. refractory).
- Follow-up at 1, 3, 5, and 10 years, analyzed using t-tests, Wilcoxon rank-sum, and Cox regression models.
Main Results:
- Diabetic response rates were 56% (1 yr), 58% (3 yr), 60% (5 yr), and 44% (10 yr).
- Responsive patients achieved greater weight loss and lower hemoglobin A1c levels.
- Decreasing age and body mass index correlated with increased diabetic cure rates.
Conclusions:
- Gastric bypass leads to substantial weight loss and improved glycemic control in diabetic patients.
- Long-term remission rates vary, highlighting the need for optimized preoperative care and follow-up strategies.
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