Nutritional requirements refer to the essential nutrients that the body needs to function properly. These include macronutrients like carbohydrates, proteins, and fats, as well as micronutrients such as vitamins and minerals. Each nutrient plays a specific role in maintaining health, supporting growth, and providing energy. Different individuals have varying nutritional needs based on factors like age, gender, activity level, and overall health. For example, children require more calcium for bone development, while athletes may need additional protein to support muscle recovery. Meeting these requirements is crucial for overall well-being and optimal performance.