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Iodine deficiency in children

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https://www.readbyqxmd.com/read/28379180/eliminating-iodine-deficiency-in-china-achievements-challenges-and-global-implications
#1
Dianjun Sun, Karen Codling, Suying Chang, Shubin Zhang, Hongmei Shen, Xiaohui Su, Zupei Chen, Robert W Scherpbier, Jun Yan
The prevention of iodine deficiency through salt iodization has been recognized as a global success story, and China stands at the forefront of this achievement with one of the most successful programs in the world. High level political commitment, national mandatory legislation, a state-managed edible salt industry and a complex and highly sophisticated surveillance system have facilitated the success of the program. Challenges have arisen however, including: (i) concern that adequate iodine status in pregnant women cannot be achieved without causing above adequate iodine intakes in children; (ii) declining iodine intake as a result of reductions in salt consumption and increased consumption of processed foods, which may not be made with iodized salt; (iii) the existence of areas with high iodine content in the water; and (iv) declines in household use of iodized salt due to concerns about excess iodine intake and thyroid disease...
April 5, 2017: Nutrients
https://www.readbyqxmd.com/read/28358234/iodine-storage-and-metabolism-of-mild-to-moderate-iodine-deficient-pregnant-rats
#2
Xin Sun, Li Lu, Ling Shan, Zhongyan Shan, Weiping Teng
BACKGROUND: Severe iodine deficiency during pregnancy results in neurodevelopmental disorders in children, while the consequences of mild to moderate iodine deficiency (MMID) are uncertain. The concentration of iodine in thyroid is the most accurate indicator of iodine nutrition. This paper is aimed to investigate that whether the iodine storage in thyroid is enough for mother and fetus during iodine sufficient and MMID conditions by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)...
March 30, 2017: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/28348999/goiter-prevalence-in-school-going-children-a-cross-sectional-study-in-two-border-districts-of-sub-himalayan-jammu-and-kashmir
#3
Rajiv Kumar Gupta, Bhavna Langer, Sunil Kumar Raina, Rashmi Kumari, Reyaz Jan, Renu Rani
INTRODUCTION: Iodine deficiency disorder remains one of the major public health problems, despite it being easily preventable. Initially thought as the disorder of Himalayan goiter belt, the disorder has been found to have a pan-India presence. The study was planned with the aim to assess the prevalence of goiter among 6-12 years school-going children and to identify levels of iodine in salt consumed at the household level in the study area. MATERIALS AND METHODS: The study was conducted among 3955 school-going (2162 children from Rajouri and 1793 children from Poonch) children age 6-12 years in Rajouri and Poonch districts of Jammu Province...
October 2016: Journal of Family Medicine and Primary Care
https://www.readbyqxmd.com/read/28331628/association-of-iodized-salt-with-goiter-prevalence-in-chinese-populations-a-continuity-analysis-over-time
#4
Zhen Liang, Chen Xu, Yong-Jun Luo
BACKGROUND: Iodine deficiency disorders (IDD) refer to diseases that are caused by insufficient iodine intake, and the best strategy to prevent IDD is the addition of iodine to dietary salt. Because iodine deficiency is a common cause of goiter, the prevalence as effectively controlled after the implementation of universal salt iodization (USI) in China. However, there is substantial controversy as to whether the incidence of thyroid disorders is related to iodized salt intake. Therefore, we aimed to clarify whether the risk of goiter can be promoted by USI...
2017: Military Medical Research
https://www.readbyqxmd.com/read/28328929/urinary-iodine-concentration-uic-could-be-a-promising-biomarker-for-predicting-goiter-among-school-age-children-a-systematic-review-and-meta-analysis
#5
Linlin Xiu, Gansheng Zhong, Xueman Ma
OBJECTIVES: To evaluate whether urinary iodine concentration (UIC) can predict goiter among school-age children, and to assess the association between UIC and goiter prevalence. METHODS: We searched the MEDLINE, EMBASE, Cochrane Library (Cochrane Database of Systematic Reviews), Web of Science, CNKI, VIP, and Wan Fang databases for relevant reports in both English and Chinese up to August 25, 2016. The mean differences (MD) and 95% confidence intervals (CI) were calculated for the UIC and goiter prevalence assessments...
2017: PloS One
https://www.readbyqxmd.com/read/28294052/iodine-deficiency-and-iodine-prophylaxis-in-pregnancy
#6
Małgorzata Trofimiuk-Müdlner, Alicja Hubalewska-Dydejczyk
BACKGROUND: Physiological changes in pregnancy result in increased iodine demand, which may not be met in areas of mild-to-moderate iodine deficiency or borderline sufficiency. As a pregnant woman is the only source of thyroid hormones for her child during early gestation, iodine deficiency-induced hypothyroxinemia may have deleterious effects on fetal development. OBJECTIVE: To present the current approach to iodine deficiency and its prophylaxis during pregnancy...
March 9, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28292346/surveys-in-areas-of-high-risk-of-iodine-deficiency-and-iodine-excess-in-china-2012-2014-current-status-and-examination-of-the-relationship-between-urinary-iodine-concentration-and-goiter-prevalence-in-children-aged-8-10-years
#7
Si Lu Cui, Peng Liu, Xiao Hui Su, Shou Jun Liu
OBJECTIVE: We aimed to evaluate goiter prevalence and iodine nutritional status in areas with high levels of water iodine; to monitor the prevalence of iodine deficiency disorders (IDD) in areas at high risk of IDD; and to compare the prevalence of goiter and urine iodine (UI) concentrations between children living in the two areas. METHODS: Based on surveillance from 2012-2014, we analyzed the concentration of UI and prevalence of goiter in 8-10-year-old children from 12 high-risk IDD provinces, and from 8 provinces and municipalities with excessive water iodine...
February 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28287203/-the-iodine-prophylaxis-the-experience-in-the-autonomous-province-of-bolzano-south-tyrol
#8
Fabrizio Franzellin, Lucio Lucchin
Since ancient times in South Tyrol there was evidence of endemic goitre caused by iodine deficiency. In the early 80's an epidemiological research on adults and primary and secondary school children reported in the least a prevalence of goitre from grade 1 B-3 (WHO) of 23,66% (limits WHO >5%) and an urinary iodine of 10,2 µgI/L. Therefore South Tyrol population presented heavy endemic goitre. In 1982 started a generalized iodine prophylaxis with alimentary iodined salt after an intense prevention campaign...
February 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28285430/the-sensitivity-and-specificity-of-thyroglobulin-concentration-using-repeated-measures-of-urinary-iodine%C3%A2-excretion
#9
Zheng F Ma, Bernard J Venn, Patrick J Manning, Claire M Cameron, Sheila A Skeaff
PURPOSE: Iodine deficiency affects 30% of populations worldwide. The amount of thyroglobulin (Tg) in blood increases in iodine deficiency and also in iodine excess. Tg is considered as a sensitive index of iodine status in groups of children and adults, but its usefulness for individuals is unknown. The aim of this study was to determine the diagnostic performance of Tg as an index of iodine status in individual adults. METHODS: Adults aged 18-40 years (n = 151) provided five spot urine samples for the measurement of urinary iodine concentration expressed as μg/L (UIC), μg/g of creatinine (I:Cre), and μg/day (estimated UIE); the mean of the five samples was used as the reference standard...
March 11, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28260263/iodine-supplementation-for-women-during-the-preconception-pregnancy-and-postpartum-period
#10
REVIEW
Kimberly B Harding, Juan Pablo Peña-Rosas, Angela C Webster, Constance My Yap, Brian A Payne, Erika Ota, Luz Maria De-Regil
BACKGROUND: Iodine is an essential nutrient required for the biosynthesis of thyroid hormones, which are responsible for regulating growth, development and metabolism. Iodine requirements increase substantially during pregnancy and breastfeeding. If requirements are not met during these periods, the production of thyroid hormones may decrease and be inadequate for maternal, fetal and infant needs. The provision of iodine supplements may help meet the increased iodine needs during pregnancy and the postpartum period and prevent or correct iodine deficiency and its consequences...
March 5, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28238467/micronutrient-intake-adequacy-in-children-from-birth-to-8-years-data-from-the-childhood-obesity-project
#11
Marta Zaragoza-Jordana, Ricardo Closa-Monasterolo, Veronica Luque, Natàlia Ferré, Veit Grote, Berthold Koletzko, Ingrid Pawellek, Elvira Verduci, Alice ReDionigi, Jerzy Socha, Anna Stolarczyk, Pascale Poncelet, Déborah Rousseaux, Joaquin Escribano
BACKGROUND: In European countries, suboptimal intake has been reported for several micronutrients (as calcium, iron, zinc, vitamin B12, D and folate) in both adulthood and childhood. No studies to date have prospectively compiled nutrient intake from healthy children in different European countries using the same methodology. AIM: To describe the adequacy of micronutrient intake during the first eight years of life in children from 5 European countries. METHODS: Prospective observational trial analyzing data from the EU Childhood Obesity Project...
February 9, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28217504/improving-iodine-nutritional-status-and-increasing-prevalence-of-autoimmune-thyroiditis-in-children
#12
Srinivasan Palaniappan, Lakshmi Shanmughavelu, Hemchand K Prasad, Sundari Subramaniam, Nedunchezian Krishnamoorthy, Lakshmi Lakkappa
OBJECTIVE: The objective of this study is to evaluate the link between excess iodine intake as evidenced by increased urinary iodine excretion (UIE) and autoimmune thyroiditis in children and to assess the correlation between UIE and thyroid microsomal antibody (thyroid peroxidase [TPO]) titers in children. MATERIALS AND METHODS: All children with goiter between age group 6 and 12 years, were subjected to blood tests for free thyroxine, thyroid stimulating hormone, and TPO antibody, fine needle aspiration was advised for all children with goiter...
January 2017: Indian Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28112064/nutrition-infection-and-stunting-the-roles-of-deficiencies-of-individual-nutrients-and-foods-and-of-inflammation-as-determinants-of-reduced-linear-growth-of-children
#13
D Joe Millward
The regulation of linear growth by nutritional and inflammatory influences is examined in terms of growth-plate endochondral ossification, in order to better understand stunted growth in children. Linear growth is controlled by complex genetic, physiological, and nutrient-sensitive endocrine/paracrine/autocrine mediated molecular signalling mechanisms, possibly including sleep adequacy through its influence on growth hormone secretion. Inflammation, which accompanies most infections and environmental enteric dysfunction, inhibits endochondral ossification through the action of mediators including proinflammatory cytokines, the activin A-follistatin system, glucocorticoids and fibroblast growth factor 21 (FGF21)...
January 23, 2017: Nutrition Research Reviews
https://www.readbyqxmd.com/read/28103778/the-role-of-the-world-health-organization-in-eliminating-iodine-deficiency-worldwide
#14
Paulina Karwowska, Joao Breda
BACKGROUND: Iodine deficiency has been one of the most prevalent micronutrient deficiencies in the world, causing many health disorders, particularly in pregnant women and children. Despite increased salt iodization in some countries and regions, the process has lacked global coordination and sustainability, two prerequisites for reaching the aim of eliminating iodine deficiency. This goal can be reached only by evidence-based, effectively monitored joint and committed actions of all countries...
January 18, 2017: Recent Patents on Endocrine, Metabolic & Immune Drug Discovery
https://www.readbyqxmd.com/read/28061776/poor-dietary-diversity-wealth-status-and-use-of-un-iodized-salt-are-associated-with-goiter-among-school-children-a-cross-sectional-study-in-ethiopia
#15
Zegeye Abebe, Ejigu Gebeye, Amare Tariku
BACKGROUND: Globally, more than two billion people are at risk of iodine deficiency disorders, 32% of which are school children. Iodine deficiency has been recognized as a severe public health concern in Ethiopia, however little is known about the problem. Therefore, this study aimed to assess the prevalence of goiter and associated factors among school children (6 to 12 years) in Dabat District, northwest Ethiopia. METHODS: A school-based cross-sectional study was conducted from February 21 to March 31, 2016...
January 7, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28029137/adequacy-assessment-of-a-universal-salt-iodization-program-two-decades-after-its-implementation-a-national-cross-sectional-study-of-iodine-status-among-school-age-children-in-tunisia
#16
Radhouene Doggui, Myriam El Ati-Hellal, Pierre Traissac, Lilia Lahmar, Jalila El Ati
In the framework of a worldwide policy to eliminate iodine deficiency (ID) disorders, universal salt iodization was adopted in Tunisia two decades ago. The present study aims to evaluate this strategy, using both performance and impact indicators. A total of 1560 children, aged 6-12 years, were randomly sampled using a national, two-stage, stratified, cross-sectional cluster survey in 2012. Urinary iodine concentration (UIC) of the subjects, and household salt iodine content, were analyzed. The national median UIC was 220 µg/L (95% confidence interval (CI): 199-241), indicating an acceptable iodine status at the population level...
December 25, 2016: Nutrients
https://www.readbyqxmd.com/read/28003823/larger-thyroid-volume-and-adequate-iodine-nutrition-in-chinese-schoolchildren-local-normative-reference-values-compared-with-who-ign
#17
Zhe Mo, Xiaoming Lou, Guangming Mao, Zhifang Wang, Wenming Zhu, Zhijian Chen, Xiaofeng Wang
Objective. Thyroid volume measured by ultrasound to define goiter needs reliable local thyroid volume reference from iodine-sufficient populations. The aim of this study is to explore the reference interval for normal thyroid volume in schoolchildren aged 8-10 years from Zhejiang Province, China. Methods. A probability-proportionate-to-size sampling method was applied to select a representative sample of 1213 children aged 8-10 years in Zhejiang Province to detect the thyroid volume, salt iodine, and urine iodine...
2016: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28001012/iodine-deficiency-and-nutrition-in-scandinavia
#18
REVIEW
Sofia Manousou, Lisbeth Dahl, Betina Heinsbaek Thuesen, Lena Hulthén, Helena Nyström Filipsson
Iodine nutrition is a result of geological conditions, iodine fortification and monitoring strategies within a country together with the dietary habits of the population. This review summarizes the basis for the current iodine situation in the Scandinavian countries in order to identify gaps in knowledge, determine necessary future steps, highlight landmarks in Scandinavian iodine research and consider ongoing studies in Scandinavian countries with high international impact. Historically, iodine deficiency disorders such as goiter were common in Norway and Sweden, but not in Denmark...
April 2017: Minerva Medica
https://www.readbyqxmd.com/read/27982368/nutrition-situation-in-latin-america-and-the-caribbean-current-scenario-past-trends-and-data-gaps
#19
Luis Galicia, Rubén Grajeda, Daniel López de Romaña
Objective: To determine the current nutritional status in Latin America and the Caribbean (LAC) and identify data gaps and trends in nutrition surveillance. Methods: A systematic Internet search was conducted to identify official sources that allowed for monitoring of LAC countries' nutritional status, including progress toward World Health Organization Global Nutrition Targets 2025. Reports from national nutrition surveillance systems and reports on nationally representative surveys were collected and collated to 1) analyze nutritional status, based on life-course anthropometric indicators and biomarkers, and 2) identify gaps in data availability and trends in nutritional deficiencies...
August 2016: Revista Panamericana de Salud Pública, Pan American Journal of Public Health
https://www.readbyqxmd.com/read/27974077/urinary-iodine-concentration-identifies-pregnant-women-as-iodine-deficient-yet-school-aged-children-as-iodine-sufficient-in-rural-niger
#20
Sonja Y Hess, Césaire T Ouédraogo, Rebecca R Young, Ibrahim F Bamba, Sara Stinca, Michael B Zimmermann, K Ryan Wessells
OBJECTIVE: To assess iodine status among pregnant women in rural Zinder, Niger and to compare their status with the iodine status of school-aged children from the same households. DESIGN: Seventy-three villages in the catchment area of sixteen health centres were randomly selected to participate in the cross-sectional survey. SETTING: Salt iodization is mandatory in Niger, requiring 20-60 ppm iodine at the retail level. SUBJECTS: A spot urine sample was collected from randomly selected pregnant women (n 662) and one school-aged child from the same household (n 373)...
December 15, 2016: Public Health Nutrition
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