Iodine deficiency

Definitions & Key takeaways

Iodine deficiency refers to the lack of sufficient amounts of the trace element iodine in the body. Iodine is crucial in the synthesis of thyroid hormones, specifically thyroxine and triiodothyronine. Thyroid hormones play a central role in regulating the normal metabolism. Consequences of iodine deficiency include goiter; cretinism, which results in developmental delays and other health problems; and hypothyroidism.