Maternal, infant, and pediatric nutrition focuses on ensuring optimal health during the critical stages of life, from pregnancy to early childhood. During pregnancy, adequate intake of nutrients such as folic acid, iron, and calcium is essential to support fetal growth and prevent complications. For infants, breast milk or appropriate formula provides the foundation for immunity and development, while the introduction of complementary foods marks a crucial phase for building healthy eating habits. Pediatric nutrition emphasizes balanced diets rich in vitamins, minerals, and proteins to support rapid growth, cognitive development, and a strong immune system. Addressing nutritional challenges during these stages helps prevent malnutrition and establishes a lifelong foundation for good health and well-being.