New Study Reveals Birth Control's Breast Cancer Link, But Experts Caution Against Misinterpretation
A massive new study published in the medical journal JAMA Oncology has found that hormonal birth control slightly increases breast cancer risk, particularly for women who use certain types of contraceptives. However, doctors say these findings should not be used to scare women into stopping their birth control, as the overall risk remains relatively low.
The 10-year study, which tracked over 2 million teenage girls and women under age 50 in Sweden, found that hormonal contraception increased breast cancer risk by around 24%. But when broken down further, the researchers found that this increase was mainly due to a small rise in breast cancer diagnoses among current or recent users of birth control. This effect is modest and short-lived, fading within five to 10 years after stopping.
Experts warn that the study's findings are being misinterpreted on social media, with some factually incomplete warnings claiming that hormonal birth control causes cancer and is as dangerous as smoking. Reproductive health advocates argue that studies like this can easily be taken out of context online and reduced to a single alarming number, leading to unnecessary fear and misinformation.
However, the study's authors stress that their findings should guide shared decision-making, not cause alarm. They note that certain progestins used in birth control formulations may increase risk, but others do not.
The key takeaway is that the risks of hormonal birth control must be weighed against the benefits, which include reducing the risk of ovarian and uterine cancers for years after stopping. Doctors emphasize that decisions about birth control should be tailored to each woman's needs and values.
"The big picture is what matters here," says Dr. Katharine White, chief of Obstetrics and Gynecology at Boston Medical Center. "The risk of an unintended pregnancy is 85% for people who do not use contraception. Any risks of birth control need to be weighed against the risk of an unexpected pregnancy."
While the study's findings are nuanced, they underscore the importance of accurate information and balanced discussions about women's health.
A massive new study published in the medical journal JAMA Oncology has found that hormonal birth control slightly increases breast cancer risk, particularly for women who use certain types of contraceptives. However, doctors say these findings should not be used to scare women into stopping their birth control, as the overall risk remains relatively low.
The 10-year study, which tracked over 2 million teenage girls and women under age 50 in Sweden, found that hormonal contraception increased breast cancer risk by around 24%. But when broken down further, the researchers found that this increase was mainly due to a small rise in breast cancer diagnoses among current or recent users of birth control. This effect is modest and short-lived, fading within five to 10 years after stopping.
Experts warn that the study's findings are being misinterpreted on social media, with some factually incomplete warnings claiming that hormonal birth control causes cancer and is as dangerous as smoking. Reproductive health advocates argue that studies like this can easily be taken out of context online and reduced to a single alarming number, leading to unnecessary fear and misinformation.
However, the study's authors stress that their findings should guide shared decision-making, not cause alarm. They note that certain progestins used in birth control formulations may increase risk, but others do not.
The key takeaway is that the risks of hormonal birth control must be weighed against the benefits, which include reducing the risk of ovarian and uterine cancers for years after stopping. Doctors emphasize that decisions about birth control should be tailored to each woman's needs and values.
"The big picture is what matters here," says Dr. Katharine White, chief of Obstetrics and Gynecology at Boston Medical Center. "The risk of an unintended pregnancy is 85% for people who do not use contraception. Any risks of birth control need to be weighed against the risk of an unexpected pregnancy."
While the study's findings are nuanced, they underscore the importance of accurate information and balanced discussions about women's health.