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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes

Published on: June 28, 2024

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Prenatal iron supplementation adjusted to maternal iron stores reduces behavioural problems in 4-year-old children

Lucía Iglesias-Vázquez1,2, Josefa Canals1,3, Carmen Hernández-Martínez1,3

  • 1Department of Basic Medical Sciences, Nutrition and Mental Health (NUTRISAM) Research Group, Universitat Rovira I Virgili, Reus, Spain.

Maternal & Child Nutrition
|December 2, 2023
PubMed

Insights

Adjusting prenatal iron doses based on maternal iron levels improves children's behavior. Personalized iron supplementation reduces behavioral issues in young children by addressing individual maternal iron stores.

Area of Science:

  • Obstetrics and Gynecology
  • Pediatrics
  • Nutritional Science

Background:

  • Prenatal iron supplementation is crucial for maternal and fetal health.
  • While benefits for child health and cognition are known, effects on behavioral development require further investigation.
  • Maternal iron status during early pregnancy can influence fetal development and long-term child outcomes.

Purpose of the Study:

  • To assess the impact of tailored prenatal iron supplementation, adjusted for maternal iron stores, on children's behavioral problems.
  • To investigate the relationship between different iron dosages, maternal hemoglobin (Hb) and serum ferritin (SF) levels, and child behavior at age 4.
  • To determine if personalized iron supplementation strategies can mitigate behavioral issues in early childhood.

Main Methods:

  • A randomized controlled trial involving 230 non-anemic pregnant women in Tarragona, Spain, with a 4-year follow-up.
  • Women received varying iron doses (20, 40, or 80 mg/day) based on Hb levels and SF concentrations before gestational week 12.
  • Child behavior was evaluated using parent and teacher reports (Child Behaviour Checklist, Behavior Rating Inventory of Executive Function-Preschool Version, Teacher's Report Form).

Main Results:

  • High-dose iron (80 mg/day) improved behavior in children of mothers with low iron stores but worsened it in those with normal-high stores (except for depressive and attention/hyperactivity issues).
  • Low-dose iron (20 mg/day) improved behavior only in children whose mothers had high SF levels (>65 µg/L).
  • Executive functioning improved with high-dose iron when maternal baseline SF was low (<15 µg/L).

Conclusions:

  • Adjusting prenatal iron supplementation to maternal Hb and iron stores is effective in reducing behavioral problems in 4-year-old children.
  • Personalized iron dosing strategies can optimize developmental outcomes by accounting for individual maternal nutritional status.
  • This approach highlights the importance of individualized nutritional interventions during pregnancy for long-term child well-being.

Keywords:
behavioural problemschild behaviourexecutive functioningiron supplementationpregnancy

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