
How Does an IUD Prevent Pregnancy?
Once inserted by a healthcare professional, the IUD works in the following ways:
✔️ Creates a Hostile Environment for Sperm – The device triggers a mild inflammatory response in the uterus, releasing immune cells and chemicals that destroy sperm before they reach the egg.
✔️ Alters Cervical Mucus – Some types of IUDs thicken cervical mucus, making it difficult for sperm to travel.
✔️ Prevents Ovulation (Hormonal IUDs) – Certain IUDs release hormones that suppress ovulation, further reducing the chance of pregnancy.
Types of IUDs
🔹 Hormonal IUDs – Release progestin, which prevents ovulation and thickens cervical mucus (e.g., Mirena, Kyleena).
🔹 Non-Hormonal (Copper) IUDs – Use copper to create a sperm-toxic environment, preventing fertilization (e.g., Paragard).
IUDs are a suitable birth control option for most women, including those who prefer a long-term, hassle-free method. However, a doctor should assess individual health conditions before insertion.