As misinformation about women's health spreads faster than ever, doctors say new research on the risks of hormonal birth control underscores the challenge of communicating nuance in the social media age.

The massive study, which was conducted in Sweden and tracked more than two million teenage girls and women under age 50 for more than a decade, found that hormonal contraception remains safe overall, but also found small differences in breast cancer risk based on the hormones used in the formulation. In addition, the researchers observed a small, short-term rise in breast cancer diagnoses among current or recent users. Those findings are consistent with prior large studies, including a 2017 Danish registry analysis and a 2023 meta-analysis .

It was published online Oct. 30 in JAMA O

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