Embolization is a medical procedure used to block blood vessels to stop bleeding or to cut off blood supply to a tumor. This is done by injecting materials, such as tiny particles or coils, into the blood vessels through a catheter. The goal is to prevent blood flow to specific areas, which can help treat conditions like uterine fibroids or varicose veins. The procedure is minimally invasive and often performed under local anesthesia. It can be done in a hospital or outpatient setting, and patients usually recover quickly. Embolization is considered a safe alternative to traditional surgery for certain conditions.