Stature, weight, and body mass among young US children born at term with appropriate birth weights

M D Overpeck1, M L Hediger, W J Ruan

  • 1Division of Epidemiology, Statistics, and Prevention Research, National Institute of Child Health and Human Development, Bethesda, Maryland 20892-7510, USA.

Insights

Early childhood size differences influence later overweight prevalence. Mexican American children show higher body mass index (BMI) before age 7, impacting adult health outcomes.

Area of Science:

  • Pediatric Health
  • Growth and Development
  • Obesity Research

Background:

  • Childhood weight and stature tracking into adulthood is a significant public health concern.
  • Early life factors are critical determinants of long-term health trajectories.
  • Understanding pre-school growth patterns is essential for predicting adolescent and adult overweight prevalence.

Purpose of the Study:

  • To analyze weight, stature, and body mass index (BMI) changes in children before age 7.
  • To investigate how these early-life growth parameters influence later overweight prevalence across different ethnic groups.
  • To determine if prenatal factors mediate or independently influence these size differences.

Main Methods:

  • Utilized regression models to predict height and weight from 2 months to 6.75 years.
  • Employed data from the third National Health and Nutrition Examination Survey (NHANES III).
  • Adjusted for birth weight and gestational age using birth certificate data for ethnic-specific analyses.

Main Results:

  • Non-Hispanic black children exhibited greater attained height compared to non-Hispanic white and Mexican American children.
  • After adjustments, weights at 2 months, 2 years, and 6.75 years were similar across racial/ethnic groups.
  • Mexican American children (boys 25.6%, girls 21.9%) showed higher prevalences of BMI above the 85th percentile compared to non-Hispanic whites and blacks by age 6.75.

Conclusions:

  • Pre-school size differences significantly predict ethnic-specific overweight prevalence in later life.
  • These early growth patterns appear to influence future obesity risk independently of prenatal factors.
  • Targeted interventions may be necessary for specific ethnic groups showing higher early-life BMI percentiles.
Abstract

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