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Parents and caregivers play a central role in shaping a child’s nutrition. They control food availability, mealtime environments, and role-model behaviors. Poor parental knowledge can lead to unhealthy feeding practices, such as early introduction of sugary foods or inadequate dietary diversity. Nutrition education helps parents provide balanced diets, prevent obesity and malnutrition, and establish lifelong healthy habits. The influence extends beyond infancy, making ongoing education essential.

Vitamin D deficiency is the leading cause of rickets globally, leading to poor bone mineralization. Calcium deficiency can contribute but is less common. Vitamin C deficiency causes scurvy, and iron deficiency causes anemia, not rickets. Sunlight exposure and supplementation prevent the condition.

Most neonatal jaundice is physiological, caused by immature liver enzyme systems (UDP-glucuronyl transferase), which cannot conjugate bilirubin efficiently. This usually appears after 24 hours of life, peaks at 3–5 days, and resolves within 1–2 weeks. Pathological causes include hemolytic disease, breastfeeding jaundice, or biliary atresia, but these are less common. Physiological jaundice is benign but requires monitoring to prevent kernicterus.

Enteral nutrition is always preferred over parenteral nutrition if gastrointestinal function is intact, as it supports gut integrity, maintains normal flora, reduces infection risk, and is physiologically more natural. In pediatrics, common routes include nasogastric tubes (short-term) or gastrostomy tubes (long-term). Parenteral nutrition via central or peripheral lines is reserved for children with contraindications to enteral feeding, such as intestinal failure or severe malabsorption. Subcutaneous infusion is not a method of delivering nutrition. This principle follows the adage “If the gut works, use it.” Enteral nutrition not only provides nutrients but also stimulates immune and mucosal function, making it essential in pediatric care when oral intake is insufficient.

Untreated severe neonatal jaundice can lead to kernicterus, a form of bilirubin-induced brain damage. It causes neurological sequelae such as cerebral palsy, hearing loss, and intellectual disability. NEC, rickets, and hypoglycemia are unrelated complications. Prompt monitoring and treatment of neonatal jaundice (phototherapy or exchange transfusion) are critical to prevent kernicterus.