in women who are using or have recently used birth control pills, implants, injections, or intrauterine devices that release hormones, warns Anne McTiernan, MD, PhD.
In a study of 1.8 million women, ages 15 to 49, breast cancer risk was increased by 20% among women who used hormonal birth control. Still, risk is low in these ages, so absolute risk was small, an extra 13 cases for every 100,000 women using hormonal contraceptives for one year.
Women should balance breast cancer risk with the health risks of nonhormonal contraceptive methods, such as IUDs.
Source: Bottom Line Personal February 2018 Anne McTiernan, MD, PhD, is a cancer prevention researcher at Fred Hutchinson Cancer Research Center, Seattle, and author of Starved: A Nutrition Doctor’s Journey From Empty to Full.
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