Table salt is the most common kind of salt found in the average kitchen. It usually comes from salt mines and once it’s mined, it is refined and most minerals are removed from it until it is pure sodium chloride. Most table salt is available either plain or iodized. after people in some parts of the country were found to be suffering from goiter, an enlargement of the thyroid gland caused by an easily-preventable iodine deficiency. People require less than 225 micrograms of iodine a day. Seafood as well as sea salt contains iodine naturally and the supplement is unnecessary if there are sufficient quantities of either in one’s diet. Note: Natural sea salt is a healthy replacement for ordinary table salt.