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Review
. 2018 Jun 1;6(6):1341-1351.
doi: 10.1002/fsn3.694. eCollection 2018 Sep.

Iodine consumption and cognitive performance: Confirmation of adequate consumption

Affiliations
Review

Iodine consumption and cognitive performance: Confirmation of adequate consumption

Hani Choudhry et al. Food Sci Nutr. .

Erratum in

  • Corrigendum.
    [No authors listed] [No authors listed] Food Sci Nutr. 2021 Jan 19;9(2):1256. doi: 10.1002/fsn3.2123. eCollection 2021 Feb. Food Sci Nutr. 2021. PMID: 33598209 Free PMC article.

Abstract

Iodine, a dynamic nutrient present in thyroid hormones, is responsible for regulating thyroid function, supporting a healthy metabolism, and aiding growth and development. Iodine is also essential for brain development during specific time windows influencing neurogenesis, neuronal and glial cell differentiation, myelination, neuronal migration, and synaptogenesis. About 1.5 billion people in 130 countries live in areas at risk of iron deficiencies (IDs). Reduced mental ability due to IDs occurs in almost 300 million people. Ensuring the consumption of minimum recommended daily allowances of iodine remains challenging. The effects of ID disorders range from high mortality of fetuses and children to inhibited mental development (cretinism). Poor socioeconomic development and impaired school performance are also notable. Currently, ID disorders are the single greatest contributor to preventable brain damage in fetuses and infants and arrested psychomotor development in children. Iodized salt may help fulfill iodine requirements. Increases in food salt iodization programs can help overcome ID disorders. Dietary plans can be well adjusted to incorporate iodinated foods. Maternal iodine supplementation for offspring requires adequate attention. Fruits, vegetables, bread, eggs, legumes (beans and peas), nuts, seeds, seafood, lean meats and poultry, and soy products provide small quantities of iodine. Nutrient-dense foods containing essential vitamins and minerals such as iodine may confer positive effects. To some extent, fortified foods and daily dietary supplements can be provided for different nutrients including iodine; otherwise, iodine may be consumed in less than the recommended amounts. This review focuses on aspects of adequate iodine consumption to avoid cognitive impairments.

Keywords: cognitive performance; cretinism; dietary plan; food salt iodization program; iodine.

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Figures

Figure 1
Figure 1
Iodine‐containing foods can contribute to healthy brain formation. TH, thyroid hormone
Figure 2
Figure 2
Recommended dietary allowances of iodine. *Adequate Intake
Figure 3
Figure 3
Iodine‐containing food sources with their values

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