Yay! Sex! October 21, 2015 All up in there: The lowdown on Intrauterine Devices (IUDs) Yay! Sex! October 21, 2015 IUDs are super effective modes of birth control, but because of their history, scary stories on the internet, and the intimidating doctor's appointment to get them placed, they are less popular in North America than in other parts of the world!