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Use of contraceptives increases breast cancer risk, study says

Use of contraceptives increases breast cancer risk, study says

were known to offer a higher risk of breast cancer, since the amount of hormones was very high. The study, published in The New England Journal of Medicine, looked at data from 1.8 million people in the United States, and the researchers found that the new formulations with less estrogen could have a lower risk. women in Denmark, all between 15 and 49 years old, who had no cancer, had clots in their veins, or who had been treated for infertility. Women were followed for almost 11 years.

The results show that the longer the products are used, the greater the risk. The 20% increase in breast cancer risk varied according to age and how long women used hormone-based contraceptives, including pills, patches, vaginal rings, implants, and injections. The risk was 9% higher with less than one year of use and 38% higher with more than 10 years of use.

"One thing that was not clear before the study is that after discontinuation, if you used this product for more than 5 years the risk appears to be increased even after 5 years of discontinuation, "lead author Dr. Lina Morch, a senior researcher at the University Hospital in Copenhagen, told Reuters.

However, the survey indicates that women who used hormonal contraceptives for short periods had a reduced risk of breast cancer. The researchers calculated that hormonal contraception produced one extra case of breast cancer for every 7,690 women a year. This represents a significant increase, with 140 million women using hormonal contraception worldwide, approximately 13% of women ages 15 to 49.

According to the researchers, the study serves as an incentive for the search for a contraceptive that does not raise the risk of breast cancer should continue. "In addition to the fact that they provide an effective means of contraception and may help women with menstrual cramps or abnormal menstrual bleeding, the use of oral contraceptives is associated with substantial reductions in the risks of ovarian, endometrial and colorectal cancer later in life. In fact, some estimates suggest that the net effect of oral contraceptive use for 5 years or more is a slight reduction in the overall risk of cancer, "Dr. David Hunter, of the University of Oxford, told the newspaper. Most cases of breast cancer have been observed in women using oral contraceptives from the age of 40 years. Therefore, doctors indicate that women in this age group use non-hormonal methods, such as the IUD.

"I do not think [no doctor] will say to stop taking oral contraceptives." This is not necessary and is not indicated by the data "But this shows an increased risk, so for people who do not have a good reason to take oral contraceptives, or are amenable to alternatives, maybe they should think about it," says Dr. Roshni Rao, chief of breast surgery at the Columbia University Medical Center in New York, who was not involved with the study.

In addition, experts indicate that it is not just oral contraceptives that cause an increased risk of breast cancer but hormone- can also pose a threat.

"So there are a lot of things to keep in mind when deciding what type of contraception to use. Contraception itself is a benefit, of course, but this study suggests that it is worth considering an alternative to hormonal contraception, such as the copper or intrauterine device. "There is no need to panic on the basis of these results." We do not want women to leave contraception without having something different to look for, and there are alternatives, "adds Lina Morch.


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