Intrauterine Device (IUD): Fast Facts
Reviewed By:
Joanne Poje Tomasulo, M.D., ACOG
- An IUD is a plastic, T-shaped device that is placed in a
woman's uterus to prevent pregnancy.
- IUDs are considered to be 99 percent effective in preventing
pregnancy but do not protect against sexually transmitted
diseases.
- There are two types of IUDs -- copper IUD and hormone-releasing
IUD. Both can be implanted by a healthcare professional in a matter
of minutes.
- An IUD is implanted in the uterus and cannot be felt by the
woman or the woman's partner during sexual intercourse.
- An IUD provides immediate birth control protection and can be
removed easily if desired or necessary.
- A copper IUD does not introduce any hormones into a woman's
body and it is the longest-lasting form of contraception available
today.
- Benefits of an IUD include a relatively easy insertion
procedure, little maintenance of the device and a low risk of side
effects.
- If checked regularly, a copper IUD may remain in a woman's
uterus up to 10 years before it needs to be changed.
- Women who may not be candidates for an IUD include those who
have had cancer of the cervix or uterus, a history or risk of
ectopic pregnancy or autoimmune diseases, such as HIV.
- Some of the possible side effects associated with a copper IUD
are heavier menstrual periods, abdominal cramps, back pain or mood
changes.
- A woman needs to monitor the placement of her IUD by
periodically checking for the presence of the string attached to
the device.
- A hormone-releasing IUD may cause irregular or cessation of a
woman's menstrual period as well as mood changes.
- If an IUD becomes displaced, a woman must use an alternative
form of birth control and contact her ObGyn for an
examination.
- The older type of IUD that was associated with pelvic
infections and infertility has been removed from the market and
these complications rarely occur with the new IUDs.
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