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[Associations among appetite, snacking, and body type during infant development]
1Ochanomizu University, Graduate School of Humanities and Schiences.
Insights
Lacking or irregular appetite in infants at 18 months often persists to 36 months, highlighting the need for early, age-tailored nutritional education. Snack habits also evolve, impacting appetite development.
Area of Science:
- Pediatric Nutrition
- Developmental Psychology
- Public Health
Background:
- Infant feeding practices and appetite regulation are critical for long-term health.
- Understanding the developmental trajectory of appetite and snacking behaviors is essential.
Purpose of the Study:
- To investigate the associations between infant appetite, snacking patterns, and body type.
- To determine if these trends persist over time in early childhood.
Main Methods:
- Longitudinal study of 1313 children from 18 to 36 months of age.
- Data collected via health checkups, including maternal reports on appetite and snack content/style.
- Statistical analyses included McNemar test and logistic regression to identify risk factors.
Main Results:
- Lacking/irregular appetite at 18 months was a significant predictor of similar appetite at 36 months (OR: 4.70).
- Unsupervised and time-unconstrained snacking were associated with irregular appetite.
- Underweight infants at 18 months had a higher risk of lacking/irregular appetite at 36 months (OR: 11.47).
Conclusions:
- Early identification and intervention for irregular appetite are crucial as it tends to persist.
- Nutritional education strategies should be age-specific, considering the changing risk factors for appetite issues.
- Snacking behaviors significantly influence appetite development throughout early childhood.
Objective:
To examine associations among appetite, snacking, and body type during infant development. We also investigated whether trends in appetite, snacking, and body type continue through time.
Methods:
Children (n=1313) born between April 2000 and March 2004, in Ito City, Shizuoka Prefecture, were enrolled. Data were collected during health checkups at 18 and 36 months of age. The items used for analysis were the child's appetite, snack content, snack-eating style, and gender. The mothers commented on their child's appetite as good, normal, lacking, or irregular. The good and normal responses were grouped under the category good/normal appetite, while lacking and irregular were grouped under the category lacking/irregular appetite. Body types were calculated using an obesity index and classified as underweight, normal, or overweight. Fifteen kinds of snacks at 36 months were classified using cluster analysis. Appetite, snack content, snack-eating style, and body type at 18 and 36 months of age were compared using the McNemar test. Logistic regression was used to determine odds ratios (ORs) and 95% confidence intervals (CIs) for the appetite categories.
Results:
There were 664 boys (50.6%) and 648 girls (49.4%) in the study (missing=1). The response rate was 56.5%. Snacks were classified by content as meal substitutes, snacks and sweet foods, or healthy snacks. There was no change in appetite at 18 and 36 months of age. By 36 months, snack content, snack-eating style had changed (e.g. solitary snacking increased.). The highest risk factor for appetite at 36 months was lacking/irregular appetite at 18 months (OR: 4.70, CI: 3.07-7.19), eating snacks without time constraints (OR: 1.81, CI: 1.24-2.65), followed by unsupervised snacking (OR: 2.92, CI: 1.45-5.87), and consuming few healthy snacks (OR: 0.69, CI: 0.48-1.00). The risk factors for lacking/irregular appetite at 18 months of age were eating snacks without time constraints (OR: 1.68, CI: 1.13-2.49), receiving snacks on-demand (OR: 1.49, CI: 1.01-2.19) or from acquaintances (OR: 2.46, CI: 1.46-4.14), and being underweight (OR: 11.47, CI: 3.20-41.15).
Conclusion:
Education must be started at an early age because lacking/irregular appetite at 18 months was found to continue through to 36 months. In addition, the risk factors for a lacking/irregular appetite differed between 18 and 36 months; thus, education should be based on age.
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