Iodized Salt

Iodized salt is common table salt (sodium chloride) that has a small amount of iodine added to it. This iodine is typically in the form of potassium iodide or potassium iodate, which are mixed into the salt during processing.

Manufacturers add iodized salt to foods primarily to provide the essential nutrient iodine, which is crucial for proper thyroid function. It also functions as a flavor enhancer, similar to regular salt, and is found in a wide variety of processed foods, snacks, and seasonings.

In the United States, salt is generally recognized as safe (GRAS) by the FDA. Iodine is an essential nutrient, and adequate intake is necessary for thyroid hormone production and overall health. JECFA has evaluated iodine and set an acceptable daily intake. The US National Academies has established an Upper Intake Level (UL) for iodine, as both too little and too much iodine can lead to health issues.