Iodised salt
Iodized salt (also spelled "iodized salt") is table salt mixed with tiny amounts of iodide and is used to prevent disease of the thyroid gland.
People only need a very small amount of iodine to prevent disease. Food crops usually get iodine from the soil, but some places around the world have low amounts of iodine. Iodized salt is a very cheap and good way of getting the necessary iodine.
Ordinary table (cooking) salt is a chemical compound called "sodium chloride" (its chemical formula is NaCl). "Sodium iodide" (NaI) is added to the NaCl to make iodized salt.
Iodised Salt Media
An example of a commonly distributed packet of iodized salt.
Iodised salt with folic acid and fluorine. The folic acid gives a light yellow color to the salt.
