| Effectiveness: Typical
effectiveness is 97%.NOTE: MAY BE AN ABORTIVE METHOD OF
BIRTH CONTROL as fertilization of an egg is still possible.
Overview
The intrauterine device (IUD) is a T-shaped plastic device that is inserted into the
uterus. IUDs contain either copper or the hormone progesterone. They prevent pregnancy by
causing a reaction within the uterus, preventing an egg from being fertilized, or
preventing a fertilized egg from being implanted.
Benefits
- Some IUDs can be left in place for up to four years (others must be replaced more
frequently)
- Suitable for women who are over 35 years of age and smoke
- Suitable for women who are breastfeeding
Disadvantages
- May be abortifacient, as fertilization sometimes
occurs.
- Although a simple procedure, it must be performed in a doctor's
office
- Possibility of cramping and spotting
- May increase the risk of ectopic pregnancy
- Risk of tearing the uterus during insertion and removal
- No protection against sexually-transmitted diseases
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