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Contraceptive method of IUD

Explain the contraceptive method of the IUD?

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The IUD (intrauterine device) is a piece of plastic coated by copper which is inserted in the uterus by doctor. Copper is then step by step released (IUD can last 5 to 10 years) plus since it has spermicidal action sperm cells are destroyed before fecundation. In addition of this method, the movement of IUD in the uterus causes slight endometrial inflammation which helps to avoid nidation.

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