Which contraceptive method acts as a barrier to sperm?

The condom is a barrier contraceptive method that physically prevents sperm from entering the cervix and reaching the egg. It is designed to cover the penis during intercourse, creating a physical barrier that reduces the risk of sperm traveling into the uterus. This method not only helps to prevent pregnancy but also offers protection against sexually transmitted infections (STIs) when used correctly.

In contrast, the intrauterine device (IUD) and the birth control patch work through different mechanisms that do not involve a physical barrier. The IUD creates a hostile environment for sperm and eggs within the uterus and can also prevent fertilization, while the birth control patch releases hormones to inhibit ovulation and regulate the menstrual cycle. The implant operates similarly by releasing hormones to prevent ovulation as well. Thus, while the other contraceptives are effective in their own right, they do not function as physical barriers like the condom does.