Contraception: Loop/IUD (intrauterine device)

How it works

IUD

• Is a small copper/plastic device placed inside the uterus
• It prevents the embryo from implanting in the uterus
• by changing the lining of the uterus
• The chemical reaction caused by the IUD in the uterus also affects sperms
• This prevents fertilisation

Effectiveness

• 97-98%

Advantages

• It is always in place once it is has been inserted
• Does not interfere with the act of sex
• It is reversible
• No effect on breast feeding
• Immediately effective

Disadvantages

• The insertion process requires a specialist
• The device mall fall out
• There is risk of infection
• Increases chances of ectopic pregnancy (this leads to a miscarriages which can be fatal)
• Some models have to be replaced by a medical professional every year
• Can lead to increased menstrual bleeding and cramps

Side effects

• Can lead to increased menstrual bleeding and cramps

To access more topics go to the Combined Science Notes page