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Related Concept Videos

Goiter01:27

Goiter

Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...
Redox Titration: Iodimetry and Iodometry01:23

Redox Titration: Iodimetry and Iodometry

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...
Immunodeficiency Diseases01:25

Immunodeficiency Diseases

Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
Graves' Disease I: Introduction01:28

Graves' Disease I: Introduction

Graves' disease is an autoimmune disorder that causes hyperthyroidism, or overactivity of the thyroid gland. It results from autoantibodies called thyroid-stimulating immunoglobulins (TSIs), which bind to thyroid-stimulating hormone (TSH) receptors, leading to overstimulation of hormone production and a hypermetabolic state.EtiologyAlthough considered idiopathic, Graves’ disease has well-established contributing factors. There is a strong genetic component, with increased prevalence in...
Diabetes Insipidus I: Introduction01:29

Diabetes Insipidus I: Introduction

Definition Diabetes insipidus is a disorder marked by the production of large amounts of dilute urine because of impaired vasopressin production, release, or kidney response. The lack of effective vasopressin action limits water reabsorption in the renal collecting ducts, which leads to excessive urinary water loss and intense thirst.Clinical PresentationIndividuals with diabetes insipidus report persistent thirst and very high urine output. In severe cases, fluid intake can reach up to 20...
International Nursing Organizations II01:28

International Nursing Organizations II

The World Health Organization (WHO) is a specialized agency of the United Nations based in Geneva. The WHO has many initiatives that center around health. Primarily, they lead global efforts to expand universal health coverage using science-based policies and programs. They are also responsible for shaping health research agendas and developing norms and standards.
The WHO provides expert team support, including funding, vaccines, testing, and treatment tools at the country level to fight...

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Related Experiment Video

Updated: May 7, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
10:14

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Published on: May 16, 2014

Iodine insufficiency: a global health problem?

Christine A Swanson1, Elizabeth N Pearce

  • 1Office of Dietary Supplements, National Institutes of Health, Bethesda, MD.

Advances in Nutrition (Bethesda, Md.)
|September 17, 2013
PubMed
Summary

Universal salt iodization (USI) dramatically decreased iodine deficiency globally. However, the United States and Canada lack USI, with pregnant women showing mild iodine deficiency, impacting fetal brain development.

Area of Science:

  • Public Health Nutrition
  • Endocrinology
  • Food Fortification

Background:

  • Global efforts have led to widespread universal salt iodization (USI), significantly reducing iodine deficiency disorders.
  • The United States and Canada are notable exceptions among developed nations in not implementing USI.
  • Assessing iodine status, particularly in vulnerable groups like pregnant women, is crucial for public health policy.

Purpose of the Study:

  • To evaluate the need for universal salt iodization (USI) in the United States and Canada.
  • To determine if USI would benefit vulnerable populations without causing harm.
  • To inform public health strategies regarding iodine intake in pregnant women.

Main Methods:

  • Analysis of National Health and Nutrition Examination Survey (NHANES) data to assess iodine status.

Related Experiment Videos

Last Updated: May 7, 2026

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography
10:14

Synthesis and Purification of Iodoaziridines Involving Quantitative Selection of the Optimal Stationary Phase for Chromatography

Published on: May 16, 2014

  • Review of recommendations from professional societies regarding iodine supplementation.
  • Examination of collaborative efforts and data needs between the United States and Canada.

    • Main Results:

    • NHANES data indicate mild iodine deficiency in pregnant women in the United States.
    • Fetal brain development is critically dependent on maternal iodine intake during pregnancy.
    • Current recommendations advise pregnant and lactating women to take iodine supplements.

    Conclusions:

    • Despite global success, USI implementation in the US and Canada requires further evidence of deficiency in key populations.
    • There is a need for research to ascertain the benefits and potential risks of USI for vulnerable groups.
    • Continued collaboration and data assessment are essential for informed decisions on salt iodization policies.