Objective: Investigate the relationship between milk fat consumption from 24 to 36 months and (1) body mass index (BMI) z-score change from 24 to 36 months, and (2) nutrient intake at 36 months among toddlers who were Special Supplemental Nutrition Program for Women, Infants, and Children (WIC)-eligible at study initiation.
Design: Longitudinal analysis using WIC Infant Toddler Feeding Practices Study-2 data collected from 2013 to 2020.
Setting: Eighty WIC enrollment sites across 27 US states.
Participants: Included 2,373 toddlers (27.6% Black, 57.1% White, 15.4% other race; 39.1% Hispanic ethnicity) from households with low income.
Interventions: None.
Main outcome measures: Changes in BMI z-score from 24 to 36 months and dietary intake (added sugars, saturated fat, total energy) at 36 months.
Analysis: Linear regression models analyzing relationships between average milk fat consumption from 24 to 36 months and outcome measures.
Results: Meeting milk fat consumption recommendations between 24 and 36 months (≤ 1%) associated with lower intake of saturated fat (all models) and energy intake (fully adjusted model), but not a change in BMI z-score or added sugars intake.
Conclusions and implications: Further research is needed to understand associations between milk fat consumption, BMI, and dietary patterns in toddlers from households with low income to inform dietary recommendations and nutritional assistance guidelines.
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