Comparison of urinary iodine excretion and thyroid volume in students with or without constant iodized salt intake

2009 ◽  
Vol 105 (S 04) ◽  
pp. 43-45 ◽  
Author(s):  
R. Gärtner ◽  
G. Bechtner ◽  
M. Rafferzeder ◽  
W. Greil
Keyword(s):  
Salt Intake ◽  
Urinary Iodine ◽  
Thyroid Volume ◽  
Iodized Salt ◽  
Urinary Iodine Excretion ◽  
Iodine Excretion

Iodized salt prophylaxis of endemic goiter: an experience in Toscana (Italy)

1993 ◽  
Vol 129 (6) ◽  
pp. 497-500 ◽  
Author(s):  
F Aghini-Lombardi ◽  
A Pinchera ◽  
L Antonangeli ◽  
T Rago ◽  
GF Fenzi ◽  
...  
Keyword(s):  
Iodine Deficiency ◽  
Endemic Goiter ◽  
Urinary Iodine ◽  
Thyroid Volume ◽  
Iodized Salt ◽  
Urinary Iodine Excretion ◽  
Goiter Prevalence ◽  
Iodine Excretion ◽  
Health Organization ◽  
Legislative Measures

It is well established that iodine supplementation is effective in correcting iodine deficiency and reducing goiter prevalence. In Italy, legislation has allowed the production of iodized salt since 1972, but its consumption is on a voluntary basis. In the present study, the efficacy of legislative measures that made compulsory the availability of iodized salt in foodstores has been evaluated. Urinary iodine excretion and thyroid size, scored according to Pan American Health Organization recommendations, were determined prior to (1981) and 10 years after (1991) the introduction of legislative measures in the whole schoolchildren population residing in a restricted area of the Tuscan Appennines. Moreover, in 1991, thyroid volume was determined by ultrasonography. In 1981, mean urinary iodine excretion was 47.1±22.4 mg/kg creatinine (0.412 μmol/l) and goiter prevalence was 60%, indicating a moderate iodine deficiency. Eighty of the families subsequently used iodized salt on a regular basis; as a result of this excellent compliance, in 1991 the mean urinary iodine excretion increased to 129.7±73 mg/kg creatinine (1.24 μmol/l) and goiter prevalence dropped to 8.1%. The results of this study underline the effectiveness of iodine prophylaxis in correcting iodine deficiency and abating endemic goiter in schoolchildren, and suggest that implementation of measures that make compulsory the availability of iodized salt in foodstores overcomes the fact that there is no law governing the exclusive production and trading of iodized salt.

scholarly journals Effects of Giving Iodized Salt, Counseling of Iodine and Goitrogenic Sources of Food in Mothers Who Have Elementary School Children Against Urinary Iodine Excretion

2019 ◽  
Vol 3 (5) ◽  
pp. 238-243
Author(s):  
I Ketut Swiryajaya ◽  
Iswari Pauzi
Keyword(s):  
Elementary School ◽  
Treatment Group ◽  
School Children ◽  
Elementary School Children ◽  
Urinary Iodine ◽  
Iodized Salt ◽  
Control Group ◽  
Urinary Iodine Excretion ◽  
Iodine Excretion ◽  
The Mean

As a result of IDD is the occurrence of impaired child growth makes researchers interested in conducting research on "Provision of iodized salt, food counseling about the source of iodine and goitrogenic substances with urinary iodine excretion status in elementary school children". Research on IDD is often carried out in primary school-age children, aged 6-12 years because of their vulnerability to iodine deficiency. The purpose of this study was to determine the effect of iodized salt interventions and counseling patterns of iodized and goitrogenic food consumption patterns on levels of urinary yodiun excretion in families with elementary school children. Research methods: The design of this study included quasi-experimental using a specific design that is "pre and post test control group design". The study population was elementary school children with a sample size of 30 children aged 9 -12 years in each group. Data collected included the consumption of nutrients by the 24-hour recall method, the results of urine iodine examination by the spectrophotometric method. The collected data is then analyzed with an independent sample T test. The results showed there were differences in urinary yodiun excretion levels in the two groups (treatment and control), while the mean in the treatment group before intervention was 106.97 ug / L and after the intervention was 43.19 ug / L. Whereas in the control group, the level of urinary yodiun excretion before intervention was 117.30 μg / L and after the intervention was 243.19 μg / L. The mean of respondents who consumed goitrogenic sources in the treatment group before the intervention (Yes = 63%, No = 37%), after the intervention (Yes = 23%, No = 77%). Whereas in the Control group before the intervention (Yes = 56%, No = 73%), after the intervention (Yes = 23%, No = 77%). The average amount of protein consumption before treatment was 47.91 µg/L ± 6.54 and 50.15 µg/L ± 12.52 after treatment. For consumption, an increase with a mean before treatment was 89.88 µg/L ± 38.45 and after treatment was 113 µg/L ± 26. The results of the independent sample t-test showed that in the treatment group there was no significant difference between after and before the intervention (p = 0.058). Whereas in the control group there were significant differences between before and after the intervention (p = 0.002). It can be concluded that there are many factors that need to be controlled in the provision of interventions, especially the use, type of salt and goitronic as well as the method of examination of iodine analysis in urine. Keywords: iodized salt; iodine food sources; goitrogenic; urinary iodine excretion

scholarly journals Prevalence of Goiter and Urinary Iodine Excretion Levels in Children Around Chernobyl*

1997 ◽  
Vol 82 (10) ◽  
pp. 3430-3433 ◽  
Author(s):  
Kiyoto Ashizawa ◽  
Yoshisada Shibata ◽  
Shunichi Yamashita ◽  
Hiroyuki Namba ◽  
Masaharu Hoshi ◽  
...  
Keyword(s):  
Urinary Iodine ◽  
Rank Correlation ◽  
Thyroid Volume ◽  
Iodine Content ◽  
Significant Negative Correlation ◽  
Urinary Iodine Excretion ◽  
Spearman’S Rank Correlation ◽  
Spearman’S Rank Correlation Coefficient ◽  
Medical Diagnostic ◽  
Iodine Excretion

Abstract The prevalence of goiter among children living in areas affected by the Chernobyl accident was investigated by analysis of data on approximately 120,000 children examined at five medical diagnostic centers in Belarus, Russia, and the Ukraine. Examinations of thyroid gland were conducted with an arch-automatic ultrasonographic instrument at the five centers under the same protocol. The diagnosis of goiter was established when the thyroid volume exceeded a limit calculated from age, height, and body weight of a child. A considerable variation by region was noted in the prevalence of goiter. Highest in the Kiev region, the prevalence in the five regions was 54% in Kiev, 38% in the Zhitomir regions of the Ukraine, 18% in Gomel, 22% in the Mogilev regions of Belarus, and 41% in the Bryansk region of Russia. Urinary iodine content was measured in approximately 5700 children, and an endemic iodine deficient zone was confirmed in the Bryansk, Kiev, and Zhitomir regions. A significant negative correlation was observed between the prevalence of goiter and the median level of urinary iodine content (Spearman’s rank correlation coefficient was −0.35, P = 0.025).

Thyroid volume and morphology and urinary iodine excretion in a Danish municipality

1993 ◽  
Vol 129 (6) ◽  
pp. 505-510 ◽  
Author(s):  
Birte Nygaard ◽  
Peter Gideon ◽  
Harriet Dige-Petersen ◽  
Niels Jespersen ◽  
Karsten Sølling ◽  
...  
Keyword(s):  
Urinary Iodine ◽  
Thyroid Volume ◽  
Entire Group ◽  
Urinary Iodine Excretion ◽  
Thyroid Disorder ◽  
Who Grade ◽  
Iodine Supplementation ◽  
Ultrasound Study ◽  
Group I ◽  
Iodine Excretion

In order to throw light upon the eventual need for iodine supplementation in Denmark, four age groups of women (15, 30, 45 and 60 years) from the Holbaek municipality were invited for a clinical and ultrasound study of thyroid volume, structure and function. Of the 570 women invited, 391 accepted and were divided into the following groups: group I: 15 years, N= 113; group II: 30 years, N= 100; group III: 45 years, N=98; group IV: 60 years, N=80. The results were as follows: the thyroid gland was palpable in 39% and visible in 16% of the entire group; 19% had a family history of thyroid disorders and 7.6% had a previous thyroid disorder. Thyroid volumes (median (range)) as measured by ultrasound were 12 ml (4–29 ml), 18 ml (5–47 ml), 18 ml (7–64 ml) and 18 ml (9-51 ml) in groups I– IV, respectively. The calculated 24-h iodine excretion was 65 μg (19–365 μg), 88 μg (15-274 μg), 97 μg (40–737 μg) and 83 μg (50–999 μg) in groups I–IV, respectively. An abnormal echo structure was present in 3, 10, 21 and 30%, respectively. Defining a goitre as a thyroid volume above 28 ml indicated a goitre prevalence of 17% in females aged 30–60 years in the Holbaek area of Denmark. Among the 60-year-old women, 3% had a clinically significant goitre (WHO grade III). Thyroid volume did not correlate with iodine excretion. The benefit of iodine supplementation is discussed.

scholarly journals Nutritional iodine status and obesity

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Mariacarla Moleti ◽  
Maria Di Mauro ◽  
Giuseppe Paola ◽  
Antonella Olivieri ◽  
Francesco Vermiglio
Keyword(s):  
Bariatric Surgery ◽  
Body Mass Index ◽  
Thyroid Hormones ◽  
Urinary Iodine ◽  
Thyroid Volume ◽  
Iodine Intake ◽  
Urinary Iodine Excretion ◽  
Obese Children ◽  
Iodine Status ◽  
Iodine Excretion

AbstractIodine is an essential component of the thyroid hormones, thyroxine and triiodothyronine. Its availability strictly depends on iodine content of foods, which may vary from very low to very high. Inadequate iodine intake (deficiency or excess) may affect thyroid function resulting in hypothyroidism or hyperthyroidism. Based on median urinary iodine concentrations, epidemiological criteria have been established for the categorization and monitoring of nutritional iodine status of a population (or subgroups of populations). Additional methods for iodine intake assessment include measurement of thyroid size (by thyroid palpation or ultrasonography) and of biochemical parameters, such as neonatal thyroid stimulating hormone, thyroglobulin and thyroid hormones.Recent studies carried out in overweight/obese children and adults provide evidence that body mass index (BMI) may significantly influence the above indicators, thus theoretically affecting the epidemiological evaluation of nutritional iodine status in populations.In this short review, we analyze current knowledge on the effects of overweight and obesity on indicators of adequacy and monitoring of iodine status, namely urinary iodine excretion and thyroid volume and echogenicity.Data on urinary iodine excretion in overweight/obese children are divergent, as both increased and reduced levels have been reported in overweight/obese children compared to normal-weight controls.Whether gastrointestinal surgery may affect iodine absorption and lead to iodine deficiency in patients undergoing bariatric surgery has been evaluated in a limited number of studies, which excluded iodine deficiency, thus suggesting that supplements usually recommended after bariatric surgery do not need to include iodine.Albeit limited, evidence on thyroid volume and obesity is consistent with a direct relationship between thyroid volume and BMI, irrespective of nutritional iodine status. Finally, a higher frequency of thyroid hypoechoic pattern has been described in overweight/obese children. This finding has been recently related to an increased adipocyte infiltration and thyroid parenchyma imbibition mediated by inflammatory cytokines and should be considered when the frequency of thyroid hypoechoic pattern is used as non-invasive marker to indirectly assess thyroid autoimmunity in monitoring Universal Salt Iodization programs. Further studies, specifically addressing the role of schoolchildren body mass index as a factor potentially influencing iodine intake indicators are needed.

Current Status of Iodine Deficiency in Mongolia in 1998-1999

2000 ◽  
Vol 12 (2) ◽  
pp. 79-84 ◽  
Author(s):  
C. Yamada ◽  
D. Oyunchimeg ◽  
P. Enkhtuya ◽  
A. Erdenbat ◽  
A. Buttumur ◽  
...  
Keyword(s):  
Iodine Deficiency ◽  
Urinary Iodine ◽  
Iodine Content ◽  
Iodized Salt ◽  
Current Status ◽  
Urinary Iodine Excretion ◽  
Salt Iodization ◽  
Thyroid Glands ◽  
Elimination Programme ◽  
Iodine Excretion

In 1992, the Mongolian government conducted a nationwide palpation study of the thyroid glands, and the study showed an overall goiter rate of 30%. As a result of this, the Mongolian Government launched its Iodine Deficiency Disorders (IDD) Elimination Programme in 1996 and its primary strategy was salt iodization. In 1998 and 1999, we carried out programme monitoring studies in 11 provinces. The results showed: among schoolchildren, a goiter rate was 22.8% (n=6,535), median values of urinary iodine excretion ranged from 11 μg/l to 256 μg/l (n=1,930), and usage rates of iodized salt (>20 PPM iodine content) in their households ranged from 3% to 82%. We concluded that severe iodine deficiency in 1992 was improved from moderate to mild severity a few years later by salt iodization. However, stronger official commitments and community participation are needed to improve the programme so that iodized salt will be made more widely available. Asia Pac JPublic Health 2000;12(2): 79-84

scholarly journals Iodine nutrition in pregnancy and lactation in Iran

2007 ◽  
Vol 10 (12A) ◽  
pp. 1596-1599 ◽  
Author(s):  
Fereidoun Azizi
Keyword(s):  
Pregnant Women ◽  
Urinary Iodine ◽  
Thyroid Volume ◽  
Iodine Concentration ◽  
Iodine Intake ◽  
Urinary Iodine Excretion ◽  
Urinary Iodine Concentration ◽  
Lactating Women ◽  
Iodine Excretion ◽  
Pregnancy And Lactation

AbstractObjective: To describe studies evaluating urinary iodine excretion during pregnancy and lactation in women living in cities with adequate or more than adequate iodine intake.Design: Cross-sectional study conducted between 1996 and 1998 in pregnant women and a study of lactating women conducted in 2003.Settings and Subjects: Pregnant women attending prenatal clinics in four cities in the Islamic Republic of Iran. Urinary iodine excretion and thyroid volume was measured in 403 women. In a second study, 100 lactating women from Taleghani Hospital in Gorgan, Iran were evaluated for thyroid size, and both urinary and breast milk iodine concentrations were determined.Results: In Rasht city, 84% of pregnant women had a urinary iodine concentration of ≥ 200 μg l-1, while in the other cities this percentage ranged from 45 to 55%. When data were combined for the cities of Ilam, Isfahan and Tehran, where women have an adequate or more than adequate median urinary iodine concentration, 51% of pregnant women had a urinary iodine concentration less than that recommended during pregnancy. In Rasht, where the median urinary iodine concentration indicates an excessive iodine intake, 15.4% of pregnant women had a urinary iodine concentration < 200 μg l-1. The mean urinary iodine concentration in lactating women was 250 μg l-1, and 16% of women had a urinary iodine concentration < 100 μg l-1. Grade 1 goitre was present in 8% of lactating women, and another 8% had grade 2 goitre.Conclusions: Findings of this study call for further attention to iodine intake during pregnancy and lactation. The currently recommended intake of iodine through universal salt iodisation may not be adequate for pregnant and lactating women, and supplementation during pregnancy and lactation should be further considered in light of the latest recommendations.

scholarly journals Dietary ratio of animal:plant protein is associated with 24-h urinary iodine excretion in healthy school children

2015 ◽  
Vol 114 (1) ◽  
pp. 24-33 ◽  
Author(s):  
Gabriela Montenegro-Bethancourt ◽  
Simone A. Johner ◽  
Peter Stehle ◽  
Thomas Remer
Keyword(s):  
Repeated Measures ◽  
Salt Intake ◽  
Urinary Iodine ◽  
Iodine Intake ◽  
Urinary Iodine Excretion ◽  
Dietary Intakes ◽  
Iodine Nutrition ◽  
Protein Ratio ◽  
Iodine Excretion ◽  
Small Decline

Adequate dietary iodine intake in children is essential for optimal physical and neurological development. Whether lower dietary animal food and salt intake may adversely affect iodine status is under discussion. We examined the association between dietary animal:plant protein ratio with 24-h urinary iodine excretion (24-h UI, μg/d), and whether this is modified by salt intake. A 24-h UI was measured in 1959 24-h urine samples from 516 6- to 12-year-old participants of the Dortmund Nutritional and Anthropometric Longitudinally Designed Study. Parallel 3 d weighed food records were used to estimate dietary intakes. Protein sources were classified as dairy, animal and plant. A repeated-measures regression model (PROC MIXED) was used to analyse the effect of animal:plant protein ratios on 24-h UI. Animal:plant protein ratios ranged from 0·5 (95 % CI 0·4, 0·6) to 1·6 (95 % CI 1·4, 1·9) (lowest and highest quartile). After adjustment for total energy intake, main dietary iodine sources (dairy and salt intake), and further covariates, the inter-individual variation in animal:plant protein ratio was significantly associated with variation in 24-h UI. One unit higher animal:plant protein ratio predicted 6 μg/d higher 24-h UI (P= 0·002) in boys and 5 μg/d (P= 0·03) in girls. This relationship was partially mediated by a higher salt intake at higher animal:plant protein ratios. These results suggest that lower consumption of animal protein is associated with a small decline in iodine excretion, partially mediated by decreased salt intake. Because limited salt and increased intake of plant-based foods are part of a preferable healthy food pattern, effective nutrition political strategies will be required in the future to ensure appropriate iodine nutrition in adherent populations.

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