Some IUDs linked to higher rates of breast cancer, but overall risk remains low [Video]

A new study adds to a growing set of evidence that women who use hormonal birth control have higher rates of breast cancer, but experts have stressed that the overall risk remains low.Video above: Dense breasts can make it harder to spot cancer on a mammogramThe latest research, published Wednesday in the medical journal JAMA, analyzed years of health records for thousands of Danish women ages 15 to 49, with an even split between those who started using intrauterine devices that release the hormone levonorgestrel for birth control and those who hadn’t used any type of hormonal contraceptive.Among more than 150,000 women, there were about 1,600 new breast cancer diagnoses overall. But there was a 40% higher risk among women who used IUDs: about 14 additional diagnoses for every 10,000 women. The risk did not increase with duration of IUD use, the researchers said.Earlier research has found similar links between …