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Iodine deficiency: Clinical implications.

Soamsiri Niwattisaiwong1, Kenneth D Burman2, Melissa Li-Ng3

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Iodine is essential for thyroid hormones and brain development. Iodine deficiency is rising in US women of childbearing age, necessitating awareness of supplementation risks and benefits.

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Area of Science:

  • Nutrition Science
  • Endocrinology
  • Public Health

Background:

  • Iodine is vital for thyroid hormone production and fetal neurodevelopment.
  • Dairy products and iodized salt are primary iodine sources in the US.
  • Iodine deficiency can lead to goiter, hypothyroidism, and cognitive impairment.

Purpose of the Study:

  • To highlight the importance of iodine in the US population.
  • To address the increasing prevalence of iodine deficiency in women of childbearing age.
  • To inform healthcare providers about iodine deficiency risks and supplementation.

Main Methods:

  • Review of current literature on iodine status in the United States.
  • Analysis of dietary iodine sources and deficiency consequences.
  • Assessment of iodine intake trends, particularly in vulnerable populations.

Main Results:

  • While iodine status is sufficient at the population level, individual intake varies significantly.
  • A growing percentage of women of childbearing age exhibit iodine deficiency.
  • Physicians need to recognize deficiency risks and supplementation needs.

Conclusions:

  • Iodine deficiency poses risks despite adequate population-level status.
  • Increased vigilance is required for women of childbearing age, pregnant, and lactating women.
  • Healthcare providers should consider iodine supplementation indications.