Association between bariatric surgery and long-term survival.

Area of Science:

• Medical research
• Surgical outcomes
• Obesity treatment

Background:

• Bariatric surgery is suggested to improve survival in severe obesity.
• Previous research in veterans showed no survival benefit from bariatric surgery.

Purpose of the Study:

• To examine long-term survival in a large cohort of veterans undergoing bariatric surgery compared to matched controls.
• Investigate the impact of bariatric procedures on all-cause mortality in the veteran population.

Main Methods:

• Retrospective cohort study of 2500 veterans who underwent bariatric surgery (2000-2011) and 7462 matched controls.
• Survival analysis using Kaplan-Meier estimators and Cox regression.
• Procedures included gastric bypass, sleeve gastrectomy, and adjustable gastric banding.

Main Results:

• Bariatric surgery was associated with significantly lower all-cause mortality at 5-14 years post-procedure (HR 0.45-0.47).
• No significant difference in mortality was observed in the first year after surgery.
• Survival benefits were consistent across subgroups with diabetes, different sexes, and varying surgery periods.

Conclusions:

• Bariatric surgery is associated with reduced all-cause mortality in obese veterans at 5 and 10 years post-procedure.
• These findings support the survival benefits of bariatric surgery in the veteran population.
• Results align with benefits seen in younger, predominantly female populations.