Chapter 12: Child and Preadolescent Nutrition

During this developmental period, children experience steady linear growth and significant cognitive maturation, making adequate nutrition essential for supporting both physical development and academic performance. The chapter addresses how to assess nutritional status using age-specific body mass index percentiles derived from CDC growth standards, with particular attention to identifying overweight and obesity classifications that increasingly characterize pediatric populations. A central focus involves understanding how children's innate hunger and fullness signals become progressively overridden by environmental factors including peer influence, marketing exposure, and food availability patterns. The chapter emphasizes parental responsibility in establishing responsive feeding practices that honor children's internal cues while maintaining appropriate structure around meals and snacks. For children demonstrating excess weight gain or metabolic concerns, a systematic four-stage intervention framework guides assessment and treatment decisions based on individual risk profiles and family readiness for behavioral modification. Dietary recommendations align with national guidelines including MyPlate and the Dietary Guidelines for Americans, with recognition that certain populations may benefit from modified approaches such as cardiovascular-protective dietary patterns for managing lipid abnormalities or diabetes risk. Physical activity emerges as a cornerstone of health promotion, with evidence-based targets recommending sixty minutes of moderate-to-vigorous intensity activity daily, supported through community partnerships and school-based comprehensive activity programs. The school environment receives substantial attention as a critical venue for nutrition intervention, including mandatory wellness policies, federally regulated child nutrition programs providing subsidized meals, and application of behavioral economics principles to enhance the appeal and selection of nutrient-dense foods within school food service systems.