Every cell in the body contains iodine and we couldn't live without it, yet many people think they can be allergic to the iodine supplements.\nLynne Farrow, author of the best-selling book "The Iodine Crisis" explains how an allergy related to iodine may not be an iodine allergy:\n1. If you are allergic to shellfish it's a specific known protein, not iodine.\n2. If you have ever had a reaction to intravenous iodinated dye in a radiation setting, again it's the dye, not the iodine.\n3. A small percentage of people are alergic to Povidone\/Betadine iodine used in surgical settings. Studies show this is an allergy to the vinyl in that formulation used to keep the iodine on the skin surface.