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Psychomotor development of children from an iodine-deficient region

Maria José Costeira1, Pedro Oliveira, Nadine Correia Santos

  • 1Life and Health Sciences Research Institute, School of Health Sciences, University of Minho, Braga, Portugal.

The Journal of Pediatrics
|April 16, 2011
PubMed

Insights

Maternal thyroid hormone levels during pregnancy significantly impact child psychomotor development. Early iodine supplementation is crucial to prevent developmental delays and behavioral issues in children from iodine-deficient regions.

Area of Science:

  • Endocrinology
  • Developmental Pediatrics
  • Public Health Nutrition

Background:

  • Iodine deficiency during pregnancy poses risks to fetal neurodevelopment.
  • Maternal thyroid function is critical for offspring's cognitive and motor skills.

Purpose of the Study:

  • To evaluate the relationship between maternal thyroid function and psychomotor development in children.
  • To identify critical periods for thyroid hormone influence on child development.

Main Methods:

  • Assessed psychomotor development using the Bayley Scale of Infant Development in 86 children at 12, 18, and 24 months.
  • Measured maternal serum free thyroxine (FT(4)) levels during the first trimester of pregnancy.

Main Results:

  • Maternal FT(4) levels in early pregnancy were the primary predictor of psychomotor development at 18 and 24 months.
  • Children of mothers with FT(4) levels below the 25th percentile had a twofold increased risk of developmental delay.
  • Behavioral alterations were noted at 12 months, correlating with later developmental outcomes.

Conclusions:

  • Maternal iodine status and thyroid function during pregnancy are vital for optimal child neurodevelopment.
  • Proactive iodine supplementation before and during pregnancy is recommended to mitigate risks.
  • Early intervention can prevent negative impacts on development and behavior.
Abstract

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