Intrauterine devices
Intrauterine Devices
Intrauterine devices (IUDs) are a type of birth control that is inserted into the uterus to prevent pregnancy. Pronounced as /ˌɪntrəˈjuːtəriːn dɪˈvaɪs/, the term originates from the Latin words "intra" meaning within, "uterus" meaning womb, and "device".
Types
There are two main types of IUDs: copper IUDs and hormonal IUDs. Copper IUDs release a small amount of copper into the uterus, which prevents the sperm from reaching and fertilizing the egg. Hormonal IUDs release progestin, a hormone that thickens the cervical mucus to prevent sperm from reaching the egg and thins the lining of the uterus to prevent a fertilized egg from implanting.
Effectiveness
IUDs are one of the most effective forms of birth control, with a failure rate of less than 1%. This means that less than 1 out of 100 women will become pregnant in a year of using an IUD.
Side Effects
Possible side effects of IUDs include irregular bleeding, cramping, and backaches. In rare cases, the IUD can perforate the uterus or become expelled.
Related Terms
External links
- Medical encyclopedia article on Intrauterine devices
- Wikipedia's article - Intrauterine devices
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