The FDA cited Bayer over its program touting Mirena in people's homes and other private settings.

Goldstein says he prefers his patients use either nonhormonal contraceptives or low-dose hormonal IUDs such as Mirena, which send their synthetic hormones to a small, localized part of the body.

The normally elegant Samantha Cameron proved the point during the election campaign in April, when she kicked off her loafers to reveal a patch of worn skin and bony lumps on her big toes.