Menopausal Estrogen and Estrogen-Progestin Replacement Therapy and Breast Cancer Risk
Top Cited Papers
Open Access
- 26 January 2000
- journal article
- research article
- Published by American Medical Association (AMA) in JAMA
- Vol. 283 (4), 485-491
- https://doi.org/10.1001/jama.283.4.485
Abstract
In a recent collaborative reanalysis of more than 90% of the world's epidemiological data on the relationship between menopausal hormone replacement therapy (HRT) and breast cancer risk, it was found that longer durations of recent, but not past, use of HRT increased breast cancer risk, particularly among leaner women and for tumors that were less clinically advanced.1 Unresolved issues include the extent to which the findings were due to a biological effect of hormones rather than issues of screening and ascertainment. The data were also insufficient to determine whether a combined estrogen-progestin regimen increased risk beyond that associated with estrogen alone.Keywords
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