What is the difference between iodized and not-iodized salt?
Iodised salt (AmE: iodized salt), table salt mixed with a minute amount of sodium iodide, is used to help reduce the chance of iodine deficiency in humans. Iodine deficiency commonly leads to thyroid gland problems, specifically endemic goiter. Endemic goiter is a disease characterized by a swelling of the thyroid gland, usually resulting in a bulbous protrusion on the neck. While only tiny quantities of iodine are required in a diet to prevent goiter, (the United States Food and Drug Administration recommends (21 CFR 101.9 (c)(8)(iv)) 150 microgrammes of iodine per day for both men and women), there are many places around the world where natural levels of iodine in the soil are low and the iodine is not taken up by vegetables. David M. Cowie was the pioneer of the salt iodization process. A professor of pediatrics at the University of Michigan, Cowie was concerned about the widespread problem of goiter in Michigan (nicknamed the “goiter belt” of America). Aware of the Swiss process of
