Combined estrogen and testosterone use and risk of breast cancer in postmenopausal women
This prospective cohort study examined the association between combined estrogen and testosterone therapy and the risk of invasive breast cancer in postmenopausal women. Over 24 years, 4,610 cases of invasive breast cancer were identified, with current users of estrogen plus testosterone therapies showing a 2.5-fold increased risk compared to never
June 26, 2025
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