New studies have found that fertility treatments such as in vitro fertilization do not appear to increase the risk of ovarian cancer in women.
Previous studies have shown that women who become pregnant using this assisted reproductive technology or ART, such as in vitro fertilization, have elevated levels of sex hormones needed to stimulate spawning, resulting in ovarian cancer and non-malignant borderline tumors. It has been suggested that there may be a risk of ovarian tissue as multiple punctures.
In ART, an egg is surgically removed from a woman’s ovary, fertilized in the laboratory, and then placed in the uterus.
In this study, researchers analyzed data from the Netherlands and found that between 1983 and 2001, more than 30,600 women who were induced to ovulate with ART and nearly 10,000 infertility who did not receive such treatment. I compared women.
After a median follow-up of 24 years, the woman had 158 invasive cancers and 100 borderline ovarian tumors. The median means that half was tracked longer and half was tracked shorter.
Importantly, women who had ART were not at higher risk of cancer than women with infertility who did not have ART, even after more than 20 years.
Women who used ART had an increased risk of ovarian cancer compared to women in the general population.
Researchers said this was mainly due to the high proportion of women who received ART and the lack of children. The absence of children has been shown to be a strong risk factor for ovarian cancer, according to the authors of a study published this week in the JNCI: Journal of the National Cancer Institute.
They also found that the risk of ovarian cancer was reduced among women with a high number of successful ART cycles leading to childbirth.
Studies have shown that women with ART have nearly doubled the odds of borderline ovarian tumors compared to women in the general population and women with infertility who do not have ART.
However, researchers suggest that after more treatment cycles or longer follow-up, the risk does not increase and may be due to the underlying patient characteristics rather than ART itself.
Borderline tumors are rare in the general population and are generally easy to treat, they said.
Flora van Lewen, the epidemiologist and lead author of the Dutch Cancer Institute in Amsterdam, said:
“But it’s important to recognize that even with long follow-ups in our study, the median age of women at the end of follow-up was only 56 years,” she said in the journal news. Mentioned in the release.
Keeping in mind that the incidence of ovarian cancer in the population increases with age, van Leeuwen said it is important to track women who have had more ART.
For more information
For more information on ovarian cancer, see the American Cancer Society.
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Study: IVF does not increase risk of ovarian cancer
Source link Study: IVF does not increase risk of ovarian cancer