What is the main purpose of supplementing infants with iron-containing complementary foods?

The main purpose of supplementing infants with iron-containing complementary foods is to prevent anemia. Iron is a vital nutrient for infants, as it plays a crucial role in the development of hemoglobin, the component of red blood cells that carries oxygen throughout the body. Infants are born with a limited iron store, which can become depleted by around six months of age, particularly if they are exclusively breastfed, as breast milk contains lower levels of iron compared to other sources.

By introducing iron-rich complementary foods, such as fortified cereals, meats, or legumes, parents can help ensure that infants maintain adequate iron levels, thereby reducing the risk of iron-deficiency anemia. This condition can lead to reduced oxygen delivery to tissues, affecting growth, cognitive development, and overall health. Thus, the focus on iron supplementation directly addresses the infant's nutritional needs to prevent anemia and its associated complications.