Research has shown that the IUD prevents pregnancy

Question

Quizplus · Accepted Answer

The IUD works by preventing implantation of a fertilized ovum, meaning that it stops a fertilized egg from attaching to the uterus and developing into a pregnancy. There is no evidence that the IUD causes irritation or immune system activation to prevent pregnancy. While the exact mechanism is not entirely clear, research suggests that the main mode of action is through creating a hostile environment for sperm and altering cervical mucus to prevent sperm from reaching the egg.

Research Has Shown That the IUD Prevents Pregnancy