BIOLOGY | MEDICAL | HEALTH on Instagram: "Follow @biology.explanation_ Read Caption ⬇️ An Intrauterine Device (IUD) is a small, T-shaped device inserted into the uterus to prevent pregnancy. It works mainly by stopping sperm from reaching or fertilizing an egg. There are two types: hormonal and copper. The hormonal IUD releases progestin, which thickens cervical mucus, thins the uterine lining, and sometimes stops ovulation. The copper IUD releases copper ions, which are toxic to sperm, preventi