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Household Food Security and Infant Adiposity

Overview
Journal Pediatrics
Specialty Pediatrics
Date 2020 Aug 30
PMID 32859735
Citations 8
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Abstract

Objectives: Food insecurity has been associated with obesity, but previous studies are inconsistent and few included infants. We examined associations between household food security and infant adiposity and assessed the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) and Supplemental Nutrition Assistance Program (SNAP) as effect modifiers. We hypothesized that infants from food-insecure households would have greater adiposity, with attenuation by WIC and SNAP.

Methods: We repeatedly measured 666 infants from the southeastern United States in 2013-2017. We categorized households as high, marginal, low, or very low using the US Household Food Security Survey Module. Outcomes were BMI score, subscapular and triceps skinfold-for-age score, the sum of subscapular and triceps skinfolds, the ratio of subscapular and triceps skinfolds, and BMI score ≥1 (at risk for overweight). We used covariate-adjusted repeated-measures linear and logistic regressions.

Results: Of infants, 68.6% were Black and 60.5% had household incomes <$20 000. Interactions between food security and WIC and/or SNAP were not significant. Compared with infants from high food security households, infants from very low food security households had higher BMI scores (0.18 U; 95% confidence interval [CI] 0.01 to 0.35), higher subscapular skinfold-for-age scores (0.31 U; 95% CI 0.04 to 0.59), a higher sum of subscapular and triceps skinfolds (0.53 mm; 95% CI 0.002 to 1.07), and greater odds of being at risk for overweight (odds ratio 1.55; 95% CI 1.14 to 2.10). Infants from low food security households had greater odds of being at risk for overweight (odds ratio 1.72; 95% CI 1.17 to 2.10).

Conclusions: In larger and longer studies, researchers should examine food security and adiposity in young children.

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