OCR General Certificate of Secondary Education (GCSE) Biology Practice Exam

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How long can an intrauterine device (IUD) be effective?

Up to 5 years
Up to 10 years
Up to 7 years
Indefinitely

The correct answer is: Up to 10 years

The effectiveness of an intrauterine device (IUD) can vary depending on the type. Some IUDs can be effective for up to 10 years, particularly the hormonal types. The hormonal IUD releases progestin, which not only prevents pregnancy but can also reduce menstrual bleeding and cramps. This long duration of effectiveness makes IUDs a popular choice for long-term contraception. Other types, like the copper IUD, may have different recommended durations of use, typically around 10 years as well. However, IUDs are not considered effective indefinitely; they must be removed and replaced according to the manufacturer's guidelines to ensure continued contraceptive effectiveness.