Original Investigation

Residential Radon Levels and Ovarian Cancer Among Postmenopausal Women

JAMA Network Open 10.1001/jamanetworkopen.2026.8641

April 10, 2026 at 11:00 AM EDT

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Are residential radon levels associated with an increased risk of ovarian cancer?This cohort study of 127 547 women with available radon zone values from the Women’s Health Initiative found that those who lived in homes with higher radon levels had a significantly increased risk of ovarian cancer.This study suggests that radon, a preventable and common exposure, may be associated with an increased risk of ovarian cancer.

Corresponding Author: Gary G. Schwartz, PhD, MPH, PhD, Department of Population Health, School of Medicine gary.schwartz@und.edu).

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