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Iodine and thyroid disease.

K A Woeber1

  • 1Mount Zion Medical Center, University of California, San Francisco.

The Medical Clinics of North America
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

Iodine is essential for thyroid hormone production, with both deficiency and excess causing health issues. Iodization programs combat deficiency, while excess iodine can harm thyroid function, especially when autoregulation is impaired.

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Area of Science:

  • Endocrinology
  • Nutritional Science
  • Public Health

Background:

  • Iodine is vital for thyroid hormone synthesis, with a minimum daily requirement of 50 micrograms.
  • Thyroid autoregulation protects against iodine fluctuations but can be overwhelmed by excess.
  • Iodine deficiency is a global health problem, causing goiter, cretinism, and cognitive disabilities.

Purpose of the Study:

  • To review the dual role of iodine in thyroid health and disease.
  • To discuss the consequences of iodine deficiency and excess.
  • To highlight the therapeutic applications of iodine in thyroid disorders.

Main Methods:

  • Literature review of iodine's role in thyroid physiology and pathology.
  • Analysis of the impact of iodine deficiency and excess on thyroid function.

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  • Examination of iodine's therapeutic uses in hyperthyroidism and pre-thyroidectomy preparation.

    • Main Results:

    • Iodine deficiency leads to endemic goiter and cretinism; iodization programs are effective preventive measures.
    • Iodine excess can cause goiter and hypothyroidism (in defective autoregulation) or thyrotoxicosis (in absent autoregulation).
    • Iodine serves as adjunctive therapy for hyperthyroidism, thyrotoxic crisis, and in preparation for thyroidectomy.

    Conclusions:

    • Maintaining adequate iodine intake is crucial for preventing thyroid disorders.
    • Understanding thyroid autoregulation is key to managing iodine excess.
    • Iodine has significant therapeutic applications in managing various thyroid conditions.