“For example, we have good evidence that the Mirena and Copper IUDs can be placed as a method of emergency contraception, and their effectiveness does not depend on the user’s weight. Hormonal IUDs have non-contraceptive benefits as well, including treatment of heavy menses, painful menses, endometriosis, and uterine pre-cancers (called endometrial intraepithelial neoplasia). The copper IUD is an excellent contraceptive option for those with a history of hormone-sensitive cancers, such as some types of breast cancer. This woman’s experience could have happened with any IUD, because it’s not the type, rather the experience of placement, that triggered her response.”