Which micronutrient is crucial for the development of red blood cells in infants?

Iron is crucial for the development of red blood cells in infants because it plays a key role in the formation of hemoglobin, the protein in red blood cells that carries oxygen throughout the body. Infants have a high demand for iron during their early months of life as they grow rapidly and require adequate oxygen supply for healthy development. Iron deficiency in infants can lead to anemia, which can hinder growth and cognitive development.

Calcium, while important for bone health and the development of skeletal structures, does not directly influence red blood cell production. Vitamin D is essential for calcium absorption and bone health as well, but again, it does not play a direct role in red blood cell formation. Zinc is vital for numerous biological functions, including immune function and cell division, but its role in red blood cell development is not as critical as that of iron. Therefore, iron is the primary micronutrient necessary for the effective production and maturation of red blood cells in infants.