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Iron-deficiency anemia in infancy and poorer cognitive inhibitory control at age 10 years

Cecilia Algarín1, Charles A Nelson, Patricio Peirano

  • 1Sleep and Functional Neurobiology Laboratory, Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile. calgarin@inta.uchile.cl

Developmental Medicine and Child Neurology
|March 8, 2013
PubMed

Insights

Children with iron-deficiency anemia in infancy showed poorer inhibitory control and slower reaction times at age 10. These executive functioning deficits persisted years after iron therapy, suggesting long-term neurological impacts.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pediatrics

Background:

  • Iron-deficiency anemia (IDA) in infancy is a prevalent global health issue.
  • Early life nutrition significantly impacts neurodevelopment and long-term cognitive outcomes.
  • Executive functions, including inhibitory control, are crucial for academic and social success.

Purpose of the Study:

  • To investigate the long-term effects of infant iron-deficiency anemia (IDA) on executive functioning.
  • Specifically, to assess inhibitory control at age 10 years in children with a history of IDA.
  • To determine if early IDA is associated with lasting deficits in cognitive control.

Main Methods:

  • A cohort of 132 Chilean children (mean age 10 years) was studied.
  • Participants included 69 children with a history of infant IDA and 63 controls.
  • Inhibitory control was assessed using the Go/No-Go task with event-related potentials (N2 and P300 components).

Main Results:

  • Children with a history of infant IDA exhibited significantly slower reaction times on the Go/No-Go task.
  • Poorer accuracy and longer N2 peak latency were observed in the IDA group.
  • Reduced P300 amplitude, reflecting resource allocation, was also found in children with prior IDA.

Conclusions:

  • Infant iron-deficiency anemia is associated with persistent deficits in inhibitory control and executive functioning.
  • These findings suggest long-lasting effects of early IDA on brain development, potentially impacting myelination and prefrontal-striatal circuits.
  • Early iron supplementation may be critical for mitigating long-term cognitive consequences of infant IDA.
Abstract

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