Some birth control pills may increase risk of breast cancer: Study

QMI AGENCY

, Last Updated: 10:29 AM ET

Recent use of high-dose estrogen birth control pills could significantly increase a young woman’s risk of developing breast cancer, a new American study has found.

The researchers at the Fred Hutchinson Cancer Research Center in Seattle, Wash., found recent oral contraceptive use increased breast cancer risk by 50%.

“Our results suggest that use of contemporary oral contraceptives in the past year is associated with an increased breast cancer risk relative to never or former oral contraceptive use, and that this risk may vary by oral contraceptive formulation,” researcher Elisabeth Beaber said in a press release.


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She warned the results need to be confirmed with more research and the study “should be interpreted cautiously.”

Birth control pills containing high-dose estrogen increased breast cancer risk 2.7-fold, and those containing moderate-dose estrogen increased the risk 1.6-fold, the study found. Birth control pills containing low-dose estrogen didn’t increase the risk of breast cancer.

The study was published in the journal Cancer Research.


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