- Proteins: Necessary for growth and tissue repair. Ensure adequate intake to prevent growth retardation. - Fats: Primary source of energy and crucial for brain development. Essential fatty acids like DHA and ARA are particularly important. - Carbohydrates: Main source of energy. Lactose is the primary carbohydrate in breast milk, promoting gut health. - Vitamins and Minerals: Including Vitamin D for bone health, iron for preventing anemia, and calcium for skeletal development.