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Related Concept Videos

Redox Titration: Iodimetry and Iodometry01:23

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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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Hypothyroidism is a disorder characterized by insufficient production of thyroid hormones, which regulate metabolism, energy balance, and multiple organ systems.TypesHypothyroidism is classified based on the level of dysfunction. Primary hypothyroidism results from intrinsic thyroid gland dysfunction, causing reduced hormone production despite normal or increased stimulation. Secondary hypothyroidism arises from inadequate thyroid-stimulating hormone (TSH) secretion by the pituitary. Tertiary...
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Updated: Jun 23, 2026

Colorimetric Assessment of Deiodinase 1 Activity in Human Liver Microsomes Using the Sandell-Kolthoff Reaction
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Published on: April 10, 2026

Iodine deficiency.

Michael B Zimmermann1

  • 1Laboratory for Human Nutrition, Swiss Federal Institute of Technology Zürich, Schmelzbergstrasse 7, LFV E19, CH-8092 Zürich, Switzerland. michael.zimmermann@ilw.agrl.ethz.ch

Endocrine Reviews
|May 23, 2009
PubMed
Summary
This summary is machine-generated.

Iodine deficiency affects 2 billion people globally, impacting thyroid health and development. Universal salt iodization is a cost-effective strategy to prevent iodine deficiency disorders and improve public health.

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Area of Science:

  • Endocrinology
  • Public Health
  • Nutritional Science

Background:

  • Iodine deficiency disorders (IDD) result from inadequate thyroid hormone production, affecting billions worldwide, particularly in South Asia and sub-Saharan Africa.
  • Mild iodine deficiency is prevalent in Europe, and intakes have declined in industrialized nations like the US and Australia.
  • Deficiency during critical developmental periods (pregnancy, infancy, childhood) can lead to impaired growth, neurodevelopment, and increased mortality.

Purpose of the Study:

  • To highlight the global prevalence and adverse effects of iodine deficiency.
  • To discuss the challenges in assessing iodine status, especially in pregnant women.
  • To emphasize the importance and effectiveness of universal salt iodization as a public health strategy.

Main Methods:

  • Review of global iodine intake data and associated health outcomes.
  • Discussion of various methods for assessing iodine status, including urinary iodine concentration, goiter, and newborn TSH.
  • Analysis of the benefits and risks of iodine supplementation and salt iodization strategies.

Main Results:

  • Iodine deficiency poses significant risks to growth, neurodevelopment, and survival across all age groups.
  • Accurate assessment of iodine status in pregnant women remains challenging.
  • Universal salt iodization is identified as the most effective and cost-efficient method for population-level iodine deficiency control.

Conclusions:

  • Universal salt iodization is a crucial public health intervention for preventing iodine deficiency disorders globally.
  • While risks of iodine excess exist, they are significantly outweighed by the substantial risks associated with iodine deficiency.
  • Ensuring adequate iodine intake is vital for optimal thyroid function and overall health, especially during pregnancy and infancy.