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Related Experiment Videos

Malnutrition and mental development: is there a sensitive period? A nested case-control study.

R Drewett1, D Wolke, M Asefa

  • 1Department of Psychology, University of Durham, UK. r.f.drewett@durham.ac.uk

Journal of Child Psychology and Psychiatry, and Allied Disciplines
|March 31, 2001
PubMed
Summary

Early childhood malnutrition does not have a specific adverse effect on cognitive development beyond its contribution to overall malnutrition. This study found that later malnutrition had a similar impact as early malnutrition when weight at testing was considered.

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Area of Science:

  • Child Development
  • Nutritional Science
  • Public Health

Background:

  • Malnutrition during early childhood is a significant concern for cognitive development.
  • Identifying sensitive periods for malnutrition's impact is crucial for timely interventions.

Purpose of the Study:

  • To investigate if there is an early sensitive period for malnutrition's effects on cognitive development.
  • To compare cognitive outcomes in children with early versus late growth faltering.

Main Methods:

  • A cohort study in Ethiopia involving 197 children categorized as early growth falterers, late growth falterers, or controls.
  • Cognitive development assessed at 2 years using the Bayley Scales of Infant Development.
  • Statistical analysis to compare cognitive scores and explore the impact of timing and duration of malnutrition.

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Main Results:

  • Children with early and late growth faltering showed significantly lower psychomotor and mental scores compared to controls.
  • Early weight faltering was linked to weight at testing, which correlated with cognitive scores.
  • After accounting for weight at testing, the timing of growth faltering did not show an additional independent effect.

Conclusions:

  • In this Ethiopian population, early malnutrition does not appear to have a specific adverse effect beyond its contribution to sustained malnutrition.
  • The duration and severity of malnutrition, as reflected by weight at testing, are key factors in cognitive outcomes.
  • Interventions should focus on preventing and addressing malnutrition throughout the first two years of life.