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There are many different forms of birth control, including the pill, the ring, the patch, the shot, condoms, and intrauterine devices (IUDs). Of these contraceptives, IUDs are the most effective, preventing pregnancy for over 99% of women who use them. In fact, IUDs are the most popular form of contraception in the world. Watch this video for information on how IUDs work, and consult your gynecologist if you’re considering IUD insertion in Houston.

IUDs are available in two types and work differently to prevent pregnancy. These T-shaped devices must be inserted in the uterus by a professional women’s healthcare provider. Copper IUDs, which can last up to 10 years, prevent fertilization by making the uterus toxic to sperm. The copper causes the uterus and fallopian tubes to create a liquid that damages or destroys sperm. Hormonal IUDs release the hormone progestin, which thickens the cervical mucus to block sperm from reaching the uterus. This hormone also thins the uterine lining, making it inhospitable for eggs. Hormonal devices can be used for three to five years after IUD insertion.