Changes in iodine nutrition status in schoolchildren from the Basque Country

Arrizabalaga, Juan José; Larrañaga, Nerea; Espada, Mercedes; Amiano, Pilar; Bidaurrazaga, J.; Latorre, Kepa; Gorostiza, Esther

doi:10.1016/j.endoen.2012.10.002

Cited by 6 publications

(6 citation statements)

References 35 publications

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“…Although these data do not necessarily identify a population with I excess, they prompt for close monitoring of the iodisation of salt and of other putative food products. UI also showed seasonal variations from spring (higher UIC) to winter (lower UIC), as previously observed in other studies (27) , which might be explained by the variability of I content in milk throughout the year (9) .…”

Section: Discussionsupporting

confidence: 86%

Iodine status and thyroid function among Spanish schoolchildren aged 6–7 years: the Tirokid study

et al. 2016

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I deficiency is still a worldwide public health problem, with children being especially vulnerable. No nationwide study had been conducted to assess the I status of Spanish children, and thus an observational, multicentre and cross-sectional study was conducted in Spain to assess the I status and thyroid function in schoolchildren aged 6-7 years. The median urinary I (UI) and thyroid-stimulating hormone (TSH) levels in whole blood were used to assess the I status and thyroid function, respectively. A FFQ was used to determine the consumption of I-rich foods.

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Section: Discussionsupporting

confidence: 86%

Iodine status and thyroid function among Spanish schoolchildren aged 6–7 years: the Tirokid study

et al. 2016

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“…The UIC was found to be at the lower end of the normal range (107.3 µg/g) (Konrade et al, 2014), which can be considered an improvement compared with results of the previous nationwide cross-sectional school study (Selga et al, 2000). Similar to the results of other studies conducted in mild iodinedeficient regions of Europe (Als et al, 2003;Moreno-Reyes et al, 2011;Arrizabalaga et al, 2012), we found seasonal UIC fluctuations. In autumn, the UIC was at the lower end of the normal range (129.7 µg/g Cr), but it was significantly lower during the spring sampling (78.3 µg/g Cr) (Konrade et al, 2014).…”

Section: Iodine Status In Childrensupporting

confidence: 81%

Iodine Deficiency in Latvia: Current Status and Need for National Recommendations

Konrāde

Kalere

Strēle

et al. 2017

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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“…We ( 19 ) , along with others ( 30 , 31 ) , have reported seasonal UIC fluctuations in mild iodine-deficient regions of Europe. The data from the Latvian Neonatal TSH Registry also confirmed the seasonal differences in TSH levels in infants ( 19 ) .…”

Section: Discussionmentioning

confidence: 56%

Iodine deficiency during pregnancy: a national cross-sectional survey in Latvia

Konrāde

Kalere

Strēle

et al. 2015

Public Health Nutr.

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Objective: Low iodine intake during pregnancy may cause thyroid dysfunction, which results in inadequate fetal brain development. In the absence of a universal salt iodization programme, we conducted a nationwide survey of iodine deficiency in pregnant women in Latvia. Design: A countrywide twenty-cluster survey, with at least twenty women per cluster. Participants completed a questionnaire on dietary habits concerning iodine intake (n 739). Thyroid function (thyroid-stimulating hormone, free thyroxine and thyroperoxidase antibodies) was measured (n 550). Urinary iodine was measured using the ammonium persulfate method (n 696). Setting: The survey was performed in all regions of Latvia during the spring and autumn seasons in 2013. Subjects: Pregnant women (n 829). Results: The median creatinine (Cr)-standardized urinary iodine concentration (UIC) was 80·8 (interquartile range (IQR) 46·1-130·6) µg/g Cr or 69·4 (IQR 53·9-92·6) µg/l during pregnancy, and 81 % of pregnant women had UIC levels below the WHO recommended range of 150-250 µg/g Cr. The UIC was lowest during the first trimester of pregnancy, 56·0 (IQR 36·4-100·6) µg/g Cr, reaching higher concentrations of 87·5 (IQR 46·4-141·7) µg/g Cr and 86·9 (IQR 53·8-140·6) µg/g Cr in the second and third trimesters, respectively. Women taking supplements containing ≥150 µg iodine (6·8 % of respondents) had non-significantly higher UIC than did women without supplementation (96·2 v. 80·3 µg/g Cr, respectively, P = NS). Thyroperoxidase antibody concentration did not correlate significantly with UIC: Spearman's ρ = − 0·012, P = 0·78. Conclusions: The median UIC indicates iodine deficiency in pregnant women in Latvia. Iodine supplementation (150 µg daily) and regular UIC monitoring should be suggested to overcome iodine deficiency and to reach the recommended levels without inducing autoimmune processes.

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Changes in iodine nutrition status in schoolchildren from the Basque Country

Cited by 6 publications

References 35 publications

Iodine status and thyroid function among Spanish schoolchildren aged 6–7 years: the Tirokid study

Iodine status and thyroid function among Spanish schoolchildren aged 6–7 years: the Tirokid study

Iodine Deficiency in Latvia: Current Status and Need for National Recommendations

Iodine deficiency during pregnancy: a national cross-sectional survey in Latvia

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