Iodine Status of 6-12-Year-Old Children in Russia over the Past 10 Years: A Scoping Review.

Rimma Korobitsyna,Andrej M Grjibovski,Anna Trofimova,Andrey Aksenov,Tatiana Sorokina

doi:10.3390/nu14040897

Abstract

Iodine is an essential element for growth and development of children. Ensuring adequate iodine intake and monitoring iodine intake are important public health concerns. According to the World Health Organization, a population-based assessment of iodine status is often done by measuring urine iodine concentration (UIC) in children aged 6–12 years. National data for large countries may hide regional differences in the UIC. Currently, there is limited data on the iodine status of children in Russia. We summarized the evidence on the iodine status of children in Russia using both international and local literature in accordance with the PRISMA guidelines. A total of 2164 studies were identified, 12 of which met the selection criteria and covered 10 of 85 federal subjects. For most of the Russian regions there was no information on UIC. A range of methodologies were used to determine UIC. The median UIC ranged from 46 μg/L in the mountainous areas in the Republic of Kabardino-Balkaria, which corresponds to a moderate iodine deficiency (ID), to 719 μg/L in the town of Turinsk (Sverdlovsk region) indicating excessive of iodine intake. Nationwide monitoring should be implemented in Russia and public health measures should be adjusted to regional and local conditions to ensure adequate iodine nutrition for all citizens.

Highlights

Iodine is an important nutrient for human growth, during the early stages of development
We summarized the evidence on the iodine status of children in Russia using both international and local literature in accordance with the PRISMA guidelines
The median urine iodine concentration (UIC) ranged from 46 μg/L in the mountainous areas in the Republic of Kabardino-Balkaria, which corresponds to a moderate iodine deficiency (ID), to 719 μg/L in the town of Turinsk (Sverdlovsk region) indicating excessive of iodine intake

Summary

Introduction

Iodine is an important nutrient for human growth, during the early stages of development. This essential element plays a crucial role in foetal neurodevelopment, especially deficits leading to poorer cognitive outcomes [1]. Children can be impacted both at different times, both during foetal development in case of iodine deficiency (ID) in the mother, and in childhood with insufficient iodine nutrition (IN) [2]. The Iodine Global Network (IGN) is a resource that reflects the average UIC values in different countries [6]. The national average UIC values may be adequate for small and relatively homogenous countries, but in large countries consisting of regions and territories at different levels of economic development and populated by different ethnic groups, national data may hide large regional variations in UIC

Objectives

Methods

Results

Discussion

Conclusion