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Cancer incidence, type, and survival after bariatric surgery
Jared R Miller1, Andrew J Borgert2, Alec J Fitzsimmons2
1Department of Medical Education, Gundersen Health System, La Crosse, Wisconsin.
Summary
Bariatric surgery significantly lowers cancer risk and improves survival rates in obese patients compared to non-surgical individuals. This study highlights the protective effects of bariatric procedures against various cancer types.
Area of Science:
- Oncology
- Metabolic Surgery
- Public Health
Background:
- Obesity is a known risk factor for numerous cancer types.
- Previous studies suggest bariatric surgery may reduce cancer incidence.
Purpose of the Study:
- To compare cancer incidence, types, and overall survival between obese patients who underwent bariatric surgery and those who did not.
- To evaluate the relative risk of cancer following bariatric intervention.
Main Methods:
- Retrospective cohort study comparing a bariatric surgery group with a matched non-surgical comparison group.
- Analysis included new incident cancer diagnoses, cumulative incidence, and overall survival using statistical tests and survival analysis.
Main Results:
- The bariatric surgery group (1593 patients) showed significantly lower cancer incidence (6.5% at 10 years) compared to the comparison group (2156 patients, 12.1%).
- Reduced relative risk of cancer was observed, particularly for endometrial, kidney, thyroid, and ductal carcinoma in situ.
- The 10-year overall survival rate was higher in the bariatric surgery group (93.3%) versus the comparison group (80.6%).
Conclusions:
- Bariatric surgery is associated with a reduced risk of developing cancer in patients with obesity.
- Undergoing bariatric surgery provides a significant survival advantage compared to non-surgical management for obese individuals.
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