Which nutritional need is critical for infants and toddlers?

Adequate intake of iron and vitamin D is critical for infants and toddlers because these nutrients play essential roles in their growth and development.

Infants and toddlers have rapidly growing bodies that require specific nutrients to support their health. Iron is vital for the development of hemoglobin, which carries oxygen in the blood, and it is crucial for cognitive development. A deficiency in iron can lead to anemia, which can adversely affect a child's growth and neurological development.

Vitamin D is important for bone health and helps in the absorption of calcium. Since infants and young children may not get enough sunlight to synthesize adequate amounts of vitamin D, dietary sources or supplements are often necessary to prevent deficiencies, which can lead to rickets and other bone-related issues.

While high protein intake is important, it is not specifically emphasized for infants and toddlers as much as iron and vitamin D. Similarly, low-fat options may not provide the necessary calorie density and essential fatty acids that young children need for optimal growth. Increased fiber consumption is more relevant for older children as their digestive systems become more developed, and it is not a critical focus for infants and toddlers who are just starting to explore solid foods.