Does the non-hormonal/copper IUD (Paragard) cause copper toxicity?

IUDs are safe for most people with a uterus, and copper toxicity is super rare. That said, it can happen, especially in people with Wilson’s Disease, a rare genetic condition which affects about 1 in every 30,000 to 40,000. Wilson’s Disease affects the body’s ability to process copper. Given how low the daily dose of copper is from the non-hormonal IUD, it is extremely unlikely that someone who does not have Wilson’s Disease would experience copper toxicity. So unless you have Wilson’s Disease, you don’t have to worry about copper toxicity from a copper IUD.