Abstract
To estimate the association of dietary practices with early life weight among children born in 2001 in the U.S. The Early Childhood Longitudinal Study (ECLS-B) is a population-based cohort followed from 9 months to Kindergarten entry (n~5000). We employed an auto-regressive cross-lagged model to assess the impacts of dietary practices on weight stability over time. We calculated age- and sex-standardized BMI z-scores using WHO growth curves. BMI z-scores had a stable increase over time. Later age of solid food introduction was associated with lower BMI z-score at age 2y [-0.03(-0.05,-0.004)]; having dinners more times per week with family at age 2y was associated with higher BMI z-score at 4y [0.03(0.01,0.05)]. These changes, of <0.05 BMI z-score, are small. Children with higher birthweight were introduced to solid foods at younger ages [-0.39 months(-0.45,-0.32)] and were breast fed longer [0.13 months(0.04,0.22)]. For girls, having dinner at a regular time at ages 2y and 4y was associated with lower BMI at ages 4y and 5y. Dietary practices in early childhood affect weight trajectories. However, these effects are small and are largely overshadowed by prior weight. Children's weight in infancy is associated with subsequent dietary practices but also small effects.
Published Version
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