National Report on Biochemical Indicators of Diet and Nutrition in the U.S. Population 1999 – 2002

Iodine, a trace element found in soil, is an essential component of the thyroid hormones involved in regulating the body’s metabolic processes. Iodized salt and seafood are the major dietary sources of iodine. In the United States, salt is iodized with potassium iodide at 100 parts per million (76 milligram [mg] of iodine per kilogram [kg] of salt). Iodized salt is chosen by about 50–60 percent of the U.S. population (Institute of Medicine 2001). Still, most ingested salt comes from processed food (approximately 70 percent), which is typically not iodized in either the United States or in Canada (The Public Health Committee of the American Thyroid Association 2006).

-Centers for Disease Control and Prevention

View Full Resource