 The iodine deficiency is one of the common things that we look for because if you don't have enough iodine, your thyroid can't work properly. And so we in the Midwest don't have enough iodine in our soil? We don't have enough iodine in our soil. So that's one of the reasons that they started to normally add iodine to salt. If a chronic type of iodine deficiency results in creatinism,