Gannett Health Services
Ho Plaza
Cornell University
Ithaca, NY 14853-3101
Tel: 607 255-5155
Email: gannett@cornell.edu
The intrauterine device (IUD) is a birth control device that is inserted into a woman’s uterus by a health care provider. IUDs are typically made of plastic or metal and have a string attached. Their presence changes the physical environment of the reproductive tract. These changes can prevent the egg from being fertilized and/or prevent a fertilized egg from implanting in the uterus. IUDs containing the female hormone progesterone can stay in place up to 5 years. IUDs containing copper can stay in the uterus for up to 10 years.
Read our fact sheet (pdf) on this topic.