Original Investigation

Bariatric Surgery and Risk of Obesity-Related Cancer by Age and Sex

JAMA Surgery 10.1001/jamasurg.2026.4798

October 14, 2026 at 11:00 AM EDT

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In this study, bariatric surgery was associated with a lower long-term risk of obesity-related cancers, with similar associations across age groups and sexes. These findings suggest that the long-term oncologic benefits of bariatric surgery apply broadly across age groups and sexes, supporting equitable access to bariatric surgery for patients with obesity.

Corresponding Author: Cecilia Radkiewicz, MD, PhD, Department of Molecular Medicine and Surgery, Karolinska Institutet, Blombäcks väg 23, 4th Floor, SE-171 77 Stockholm, Sweden (cecilia.radkiewicz@ki.se).

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