Iodized salt is the primary food source of iodine.
Kelp is the most common vegetable seafood that is a rich source of iodine. Dairy products and plants grown in soil that is rich in iodine are also good sources. Iodine is essential for the normal metabolism of cells. It is necessary nutrient for the production of thyroid hormones and normal thyroid function. A 6- ounce portion of ocean fish provides 650 micrograms of iodine.