An update: maternal iodine supplementation, thyroid function tests, and child neurodevelopmental outcomes.
Journal
Current opinion in endocrinology, diabetes, and obesity
ISSN: 1752-2978
Titre abrégé: Curr Opin Endocrinol Diabetes Obes
Pays: England
ID NLM: 101308636
Informations de publication
Date de publication:
01 10 2023
01 10 2023
Historique:
medline:
11
9
2023
pubmed:
7
7
2023
entrez:
7
7
2023
Statut:
ppublish
Résumé
The impact of maternal iodine supplementation (MIS) during pregnancy on thyroid function and child neurodevelopmental outcomes in areas of mild-to-moderate iodine deficiency (MMID) remains unclear. Despite growing success of salt iodization programs, a 2022 meta-analysis found that 53% of pregnant patients worldwide continue to have insufficient iodine intake during pregnancy. A 2021 randomized controlled trial (RCT) found that MIS in women with mild iodine deficiency led to iodine sufficiency and positive effects on maternal thyroglobulin. A 2021 cohort study of MIS initiated prior to pregnancy was associated with lower thyroid-stimulating hormone (TSH), higher FT3, and FT4. Other cohort studies, however, found that neither salt iodization nor MIS were adequate to meet pregnancy iodine needs. Data have been mixed regarding maternal iodine status and pregnancy outcomes in patients of MMID. Meta-analyses have not shown any clear benefit on infant neurocognitive outcomes with MIS of MMID patients. A 2023 meta-analysis found that the prevalence of excess iodine intake in pregnancy was 52%. MMID continues to exist during pregnancy. Salt iodization alone may be insufficient to ensure adequate iodine status during pregnancy. There is an absence of high-quality data to support routine MIS in areas of MMID. However, patients with specialized diets (vegan, nondairy, no seafood, noniodized salt, and so on) may be at risk for inadequate iodine status in pregnancy. Excess iodine intake can be detrimental to the fetus and should be avoided during pregnancy.
Identifiants
pubmed: 37417826
doi: 10.1097/MED.0000000000000824
pii: 01266029-990000000-00067
doi:
Substances chimiques
Iodine
9679TC07X4
Thyrotropin
9002-71-5
Types de publication
Review
Meta-Analysis
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
265-272Informations de copyright
Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.
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