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Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)

Iodine sufficiency is particularly important in pregnancy, where median urinary iodine concentration (UIC) in the range of 150–250 µg/L indicates adequate iodine status. The aims of this study were to determine UIC and assess if dietary and maternal characteristics influence the iodine status in pre...

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Autores principales: Dahl, Lisbeth, Wik Markhus, Maria, Sanchez, Perla Vanessa Roldan, Moe, Vibeke, Smith, Lars, Meltzer, Helle Margrete, Kjellevold, Marian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5946298/
https://www.ncbi.nlm.nih.gov/pubmed/29677112
http://dx.doi.org/10.3390/nu10040513
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author Dahl, Lisbeth
Wik Markhus, Maria
Sanchez, Perla Vanessa Roldan
Moe, Vibeke
Smith, Lars
Meltzer, Helle Margrete
Kjellevold, Marian
author_facet Dahl, Lisbeth
Wik Markhus, Maria
Sanchez, Perla Vanessa Roldan
Moe, Vibeke
Smith, Lars
Meltzer, Helle Margrete
Kjellevold, Marian
author_sort Dahl, Lisbeth
collection PubMed
description Iodine sufficiency is particularly important in pregnancy, where median urinary iodine concentration (UIC) in the range of 150–250 µg/L indicates adequate iodine status. The aims of this study were to determine UIC and assess if dietary and maternal characteristics influence the iodine status in pregnant Norwegian women. The study comprises a cross-sectional population-based prospective cohort of pregnant women (Little in Norway (LiN)). Median UIC in 954 urine samples was 85 µg/L and 78.4% of the samples (n = 748) were ≤150 µg/L. 23.2% (n = 221) of the samples were ≤50 µg/L and 5.2% (n = 50) were above the requirements of iodine intake (>250 µg/L). Frequent iodine-supplement users (n = 144) had significantly higher UIC (120 µg/L) than non-frequent users (75 µg/L). Frequent milk and dairy product consumers (4–9 portions/day) had significantly higher UIC (99 µg/L) than women consuming 0–1 portion/day (57 µg/L) or 2–3 portions/day (83 µg/L). Women living in mid-Norway (n = 255) had lowest UIC (72 µg/L). In conclusion, this study shows that the diet of the pregnant women did not necessarily secure a sufficient iodine intake. There is an urgent need for public health strategies to secure adequate iodine nutrition among pregnant women in Norway.
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spelling pubmed-59462982018-05-15 Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN) Dahl, Lisbeth Wik Markhus, Maria Sanchez, Perla Vanessa Roldan Moe, Vibeke Smith, Lars Meltzer, Helle Margrete Kjellevold, Marian Nutrients Article Iodine sufficiency is particularly important in pregnancy, where median urinary iodine concentration (UIC) in the range of 150–250 µg/L indicates adequate iodine status. The aims of this study were to determine UIC and assess if dietary and maternal characteristics influence the iodine status in pregnant Norwegian women. The study comprises a cross-sectional population-based prospective cohort of pregnant women (Little in Norway (LiN)). Median UIC in 954 urine samples was 85 µg/L and 78.4% of the samples (n = 748) were ≤150 µg/L. 23.2% (n = 221) of the samples were ≤50 µg/L and 5.2% (n = 50) were above the requirements of iodine intake (>250 µg/L). Frequent iodine-supplement users (n = 144) had significantly higher UIC (120 µg/L) than non-frequent users (75 µg/L). Frequent milk and dairy product consumers (4–9 portions/day) had significantly higher UIC (99 µg/L) than women consuming 0–1 portion/day (57 µg/L) or 2–3 portions/day (83 µg/L). Women living in mid-Norway (n = 255) had lowest UIC (72 µg/L). In conclusion, this study shows that the diet of the pregnant women did not necessarily secure a sufficient iodine intake. There is an urgent need for public health strategies to secure adequate iodine nutrition among pregnant women in Norway. MDPI 2018-04-20 /pmc/articles/PMC5946298/ /pubmed/29677112 http://dx.doi.org/10.3390/nu10040513 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Dahl, Lisbeth
Wik Markhus, Maria
Sanchez, Perla Vanessa Roldan
Moe, Vibeke
Smith, Lars
Meltzer, Helle Margrete
Kjellevold, Marian
Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title_full Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title_fullStr Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title_full_unstemmed Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title_short Iodine Deficiency in a Study Population of Norwegian Pregnant Women—Results from the Little in Norway Study (LiN)
title_sort iodine deficiency in a study population of norwegian pregnant women—results from the little in norway study (lin)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5946298/
https://www.ncbi.nlm.nih.gov/pubmed/29677112
http://dx.doi.org/10.3390/nu10040513
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