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Iodine

A Nutrient Guide

Iodine Cover Image

Iodine is an essential trace element present in a variety of foods. It is necessary for the production of thyroid hormones. These hormones control many basic metabolic processes and are responsible for the development of the skeleton and nervous system. Iodine is also essential for normal cognitive function.

Iodine deficiency has decreased in many countries due to the introduction of iodized salt and the importation of outside food into areas with iodine-poor soil. However, some groups are still at risk for iodine deficiency including pregnant women, people who live in areas with iodine-poor soil, and people without access to iodized salt, or have decreased or eliminated their use of iodized salt.

Globally, iodine deficiency is a public health issue in 47 countries, and 38% of the world’s population lives in areas with iodine deficiency.

This 20-page illustrated guide covers the following topics:

  • An Overview of Iodine
  • Food Sources of Iodine
  • Iodized Salt
  • Functions of Iodine
  • Effects of Iodine Deficiency
  • Iodine-Deficient Populations
  • Excessive Iodine
  • Interactions with Medications
  • The Future of Iodine in Foods,Beverages, and Supplements
Iodine Guide Example Inside Photos
Iodine Guide Outside Cover
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Iodine is essential for normal cognitive function.

It is required for the development of the nervous system and brain, so much so that even a small amount of iodine deficiency can cause neurodevelopmental problems. Iodine deficiency can cause, for example, a child to have lower than average intelligence. Studies have suggest that moderate-to-severe iodine deficiency, especially in children, reduces IQ by 12-13.5 points. 

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