CHICAGO (WCAX) Some important information for women taking birth control pills-- a new study shows women who take the pill may increase their risk of breast cancer by up to 38 percent.
Researchers examined data from 1.8 million Danish women under the age of 50. They showed the risk level increased the longer a woman had been taking hormonal contraceptives, with the average risk increase being 20 percent among all current and recent users.
The study found a 9 percent increased breast cancer risk among women taking hormonal contraceptives for under a year, rising to 38 percent if more than 10 years.
Researchers found a similar breast cancer risk with the progestin-only intrauterine device.
The study was published Wednesday in the New England Journal of Medicine.