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Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
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Iodometry and iodimetry are analytical methods used to determine the concentration of oxidizing or reducing agents using iodine. In iodometric titrations, the oxidizing analyte solution is usually acidified and treated with an excess of iodide ions, which generates an equivalent amount of iodine in equilibrium with triiodide. The released iodine is subsequently titrated directly against a standardized reducing agent. As the dilute iodine color becomes pale yellow, a few drops of freshly...
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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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Hormones, the biochemical messengers produced by endocrine glands, are pivotal in regulating bodily functions and maintaining homeostasis. Each hormone's balance is crucial; imbalances can lead to significant physiological disruptions. Major hormones include oxytocin, cortisol, epinephrine, estrogen, testosterone, thyroxine, growth hormone, insulin, and glucagon.
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Thiazide diuretics are sulfonamide derivatives featuring a benzothiadiazine ring system in their molecular structure. Based on this structure, thiazide diuretics can be categorized into two groups: thiazide-type and thiazide-like diuretics. Thiazide-type diuretics, including hydrochlorothiazide and chlorothiazide, consist of a benzothiadiazine backbone with an attached sulfonamide group. Thiazide-like diuretics, such as chlorthalidone and indapamide, lack the thiazide ring but demonstrate...
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Updated: Sep 16, 2025

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model
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Iodine and Hypothyroidism.

Xinyi Fan1, Shuang Guo2, Shentao Wu1

  • 1First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, National Clinical Research Centre for Chinese Medicine Acupuncture and Moxibustion, 300381, Tianjin, China.

Endocrine, Metabolic & Immune Disorders Drug Targets
|July 7, 2025
PubMed
Summary
This summary is machine-generated.

Iodine is crucial for thyroid hormone production. Iodine deficiency is a common cause of hypothyroidism, but iodine also plays a role in managing and recovering from thyroid disorders.

Keywords:
Iodineautoimmune hypothyroidism.hypothyroidismthyroid diseases

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Area of Science:

  • Endocrinology
  • Nutritional Science
  • Thyroidology

Background:

  • Hypothyroidism, a common thyroid disorder, results from decreased thyroid hormone synthesis or secretion.
  • Iodine, essential for thyroid hormone production, is obtained through daily diet.
  • Iodine deficiency is a primary global cause of thyroid disorders, including goiter and developmental issues in infants.

Purpose of the Study:

  • To explore and summarize the intricate correlation between iodine intake and hypothyroidism.
  • To provide a comprehensive reference for understanding iodine's role in thyroid health for clinical and research purposes.

Main Methods:

  • Literature review and synthesis of existing research on iodine's role in thyroid function and dysfunction.
  • Analysis of the relationship between serum iodine levels and various hypothyroidism etiologies.
  • Examination of iodine's therapeutic and complementary roles in managing hypothyroidism, particularly post-surgical cases.

Main Results:

  • Iodine deficiency is identified as the most common cause of hypothyroidism and related conditions like goiter.
  • Hypothyroidism has diverse causes, with autoimmune, post-surgical, and drug-induced forms accounting for 90% of cases.
  • Serum iodine levels show a strong correlation with hypothyroidism; iodine supplementation can reduce post-surgical hypothyroidism incidence and aid recovery.

Conclusions:

  • Iodine is fundamentally linked to the development and management of hypothyroidism.
  • Adequate iodine intake is vital for preventing hypothyroidism, while supplementation may offer therapeutic benefits in specific contexts.
  • Further research into iodine's dual role in thyroid disease occurrence and treatment is warranted.