Iodine 1 article

Thyroid-hormone chemistry depends on iodine, an essential trace element obtained from foods and fortified salt. Seafood, dairy foods, seaweed, and iodized salt can contribute iodine, although seaweed content can vary widely; fortification commonly uses potassium iodide or potassium iodate. When comparing products, the useful distinction is between iodine as a nutrient and the specific iodine-containing ingredient or food source, especially where salt fortification or seaweed creates very different concentration patterns.