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Intellectual development and nutrition.

D Evans, J D Hansen, A D Moodie

    The Journal of Pediatrics
    |September 1, 1980
    PubMed
    Summary
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    Early nutritional intervention for children with kwashiorkor significantly improved full-scale IQ scores by age 8.9. Supplementary feeding enhanced verbal intelligence, while environmental factors influenced nonverbal scores.

    Area of Science:

    • Pediatrics
    • Nutritional Science
    • Developmental Psychology

    Background:

    • Kwashiorkor is a severe form of malnutrition.
    • Malnutrition can have lasting effects on child development.
    • Understanding the long-term cognitive impact of kwashiorkor and its prevention is crucial.

    Purpose of the Study:

    • To investigate the long-term cognitive effects of early nutritional intervention in children with a history of kwashiorkor.
    • To compare cognitive outcomes between supplemented children and various control groups.

    Main Methods:

    • A longitudinal study involving 14 families with a history of kwashiorkor.
    • One newborn per family received supplementary feeding for the first two years.
    • Control groups included siblings who did not receive supplementary feeding.

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  • Cognitive assessments, including IQ tests, were administered around age 8.9 years.

    • Main Results:

    • The supplementary feeding group showed significantly higher full-scale IQ scores compared to all control groups.
    • No significant differences were observed in nonverbal IQ between the supplemented group and controls.
    • Brain damage measures did not differentiate between the groups.

    Conclusions:

    • Nutritional factors, particularly early supplementary feeding, play a significant role in enhancing verbal intelligence in children recovering from kwashiorkor.
    • Environmental stimulation may contribute to nonverbal cognitive development in control groups.