Impact of Eating Frequency and Snack Quality on Body Weight of WIC Preschool Children

OBJECTIVES: To understand the influence of eating frequency and snack quality on body weight of preschool children ages 3 up to 5 years participating in the Broward County Special Supplementation Nutrition Program for Women, Infants, and Children (WIC). METHODS: Cross-sectional data were collected from all 7 Broward County Health Department WIC clinics over 4 months via a researcher-administered questionnaire. Additional data were extracted from the WIC data system. Centers for Disease Control and Prevention's BMI-for-age percentiles were used to classify children into weight categories that were combined into under/normal weight and overweight/obese. Snacks were categorized into nutrient-based food groups and assigned a quality score. RESULTS: A total of 197 participants [90 boys (45.7%) and 107 girls (54.3%)] were included. From those, 3.6% were underweight, 64.4% normal weight, 16.8% overweight and 15.2% were obese. Most children consumed 3 meals (97.5%) and between 2 (33%) to 3 (37.1%) snacks on average per day. Mean number of snacks on the weekend was significantly higher than on weekdays (2.78 ± 1.20 vs. 2.67 ± 1.08, P = 0.001). We found a tendency for a lower prevalence of overweight/obesity as the number of eating events increased, although it was not significant. The most frequently consumed snacks were milk, 100% fruit juice, and fresh fruits, consumed daily by more than 75% of the children, irrespective of weight category. There was an overall higher consumption of more nutritious snacks when compared to nutrient-poor snacks (66% vs. 33.5%), with under/normal weight children consuming nutritious snacks more frequently than overweight/obese children (P = 0.09). CONCLUSIONS: Most children included in this study engaged in frequent eating events with a higher intake of the more nutritious snacks, which were both associated with a lower prevalence of overweight/obesity. Our findings suggest that in this age range, participation in the WIC program may foster positive eating behaviors. FUNDING SOURCES: A.C. was supported by a NIH/NIGMS R25 grant. Support to conduct the study was provided by the FIU Dietetics and Nutrition research foundation. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.