Hormone Therapy Increases Odds of Ovarian Cancer
TUESDAY, July 14 (HealthDay News) -- Women who take hormone replacement therapy or have taken it in the recent past have a higher risk of developing ovarian cancer, suggests new research.
In a large Danish study, compared to women who never took hormone replacement therapy, current users had a 38 percent increased risk of ovarian cancer and a 44 percent increased risk of epithelial ovarian cancer, which is cancer that begins on the outer lining of the ovary. The results were reported in the July 15 issue of the Journal of the American Medical Association.
The absolute risk for any one woman is still quite small, however. The researchers calculated that for every 8,300 women, hormone therapy would result in one extra case of ovarian cancer a year.
"Our study underlines previous evidence that postmenopausal hormones increase the risk of ovarian cancer," said the study's lead author, Lina Steinrud Morch of the gynecological clinic at the Rigshospitalet of Copenhagen University in Denmark. "The risk among women taking hormones was increased regardless of the duration of use, the formulation, the estrogen dose, regimen, progestin type or route of administration," she added.
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