This module covers the foundations of pediatric nutrition, emphasizing individualized, age-specific assessment based on growth, development, health status, and feeding behavior. It explains the ABCD nutritional assessment framework, including anthropometric, biochemical, clinical, and dietary evaluation using appropriate age- and sex-specific growth charts. The module explores growth faltering, its warning signs, underlying causes, and nutritional implications, along with the importance of monitoring growth patterns over time. It also discusses nutritional priorities across infancy, toddlerhood, preschool, school age, and adolescence, including feeding practices, developmental needs, healthy habits, and age-specific nutritional concerns.