Nutrition during different life stages greatly affects overall health. During infancy, nutrients like breast milk or formula are critical for brain development. In childhood, a balanced diet supports growth, learning, and immune function, laying the groundwork for lifelong health. For adolescents, proper nutrition is vital to accommodate developmental changes and energy demands. In adulthood and elderly stages, tailored diets can aid in maintaining muscle mass, preventing chronic diseases, and improving longevity. Adapting nutritional needs at various stages ensures optimal health throughout life.