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Body mass index and cognitive ability of young children

Jorien Veldwijk1, Salome Scholtens, Gerard Hornstra

  • 1Centre for Prevention and Health Services Research, National Institute for Public Health and the Environment, Bilthoven, The Netherlands. jorien.veldwijk@rivm.nl

Obesity Facts
|September 17, 2011
PubMed

Insights

This study found no significant link between body mass index (BMI) and cognitive ability in children. Further research is needed to explore potential subtle associations in child development.

Area of Science:

  • Pediatric Health
  • Developmental Psychology
  • Nutritional Science

Background:

  • Childhood obesity is a growing concern, with potential impacts on overall development.
  • Understanding the relationship between body mass index (BMI) and cognitive function is crucial for early intervention.
  • Previous research has yielded mixed results regarding the association between BMI and cognitive abilities in children.

Purpose of the Study:

  • To prospectively assess the association between body mass index (BMI) and cognitive ability in young children.
  • To investigate this relationship while controlling for potential confounding factors.
  • To contribute to the understanding of how weight status influences cognitive development in early childhood.

Main Methods:

  • A Dutch birth cohort study included 236 children.
  • Anthropometric data and cognitive ability (Kaufman Assessment Battery for Children - K-ABC) were collected at various ages.
  • Univariate and multivariate linear regression analyses were employed to examine the association between BMI and cognitive ability.

Main Results:

  • A trend suggested lower cognitive ability with higher BMI at 4 and 7 years, but this was not statistically significant.
  • Maternal intelligence was a significant covariate across all cognitive scales.
  • Adjustments for physical fitness, maternal education, pre-pregnancy BMI, smoking, and birth weight did not alter the findings.

Conclusions:

  • No significant evidence was found to support an association between BMI and cognitive ability in school-aged children.
  • Maternal intelligence emerged as a strong predictor of cognitive ability.
  • Further investigation may be warranted to explore potential nuanced relationships or long-term effects.
Abstract

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