Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Iodine deficiency
Medically reviewed by Min Clinic Staff | Updated: January 2026
Iodine deficiency: A lack of sufficient iodine in the diet, which can lead to inadequate production of thyroid hormone (hypothyroidism) and enlargement of the thyroid gland (goiter). Since the addition of iodine to table salt became common, iodine deficiency has rarely been seen in the US.