2017-12-14 12:49:45 UTC
A study published last week in The New England Journal of Medicine has found that hormonal contraceptives, including oral contraceptive pills and hormone-releasing IUDs, significantly increase women’s risk for breast cancer.
The study found that women who used hormonal contraception had a 20 percent elevated risk[1] for breast cancer compared to women who had never used a hormonal method.
The risk was also found to be time-dependent, increasing the longer the hormonal drugs were used. Women who used hormonal contraception longer than 10 years saw their risk for breast cancer increase by almost 40 percent.[2]
While the study showed that the breast cancer risk decreased after stopping hormonal contraception, for women who used a hormonal method for five years or more, the effects of drug lingered. Women who used hormonal contraception longer than five years saw a significant elevated risk for breast cancer even five years or more after discontinuation.