Circulating estrogens and postmenopausal ovarian and endometrial cancer risk among current hormone users in the Women’s Health Initiative Observational Study

Menopausal hormone therapy (MHT) use induces alterations in circulating estrogens/estrogen metabolites, which may contribute to the altered risk of reproductive tract cancers among current users. Thus, the current study assessed associations between circulating estrogens/estrogen metabolites and ovarian and endometrial cancer risk among MHT users.We conducted a nested case-control study among postmenopausal women using MHT at baseline in the...