Ovarian Cancer Risk in Fertility Assistance Rises Mainly for Women with Endometriosis, Study Suggests

Ovarian Cancer Risk in Fertility Assistance Rises Mainly for Women with Endometriosis, Study Suggests
Women who require assisted reproductive technology to become mothers are not more likely to develop ovarian cancer, except for those with endometriosis, a new study suggests. The study, "Assisted reproductive technology treatment and risk of ovarian cancer—a nationwide population-based cohort study," was published in the journal Human Reproduction. Assisted reproductive technology (ART), like in vitro fertilization (IVF), involves medical interventions intended to facilitate conception. The treatment also involves a step called ovarian stimulation, in which women take medication to make many mature eggs at one time. Whether this raises the risk of ovarian cancer is still unclear, with previous studies yielding conflicting results. For greater clarity, researchers analyzed data from Danish national health registers, including the Danish IVF Register and the Danish Cancer Register. They gathered data on 58,472 women who used ART — with procedures including ovarian stimulation — between 1994 and 2015, and compared findings to 625,330 age-matched women with no history of ART treatment.
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