What dietary component may interfere with the absorption of iron supplements in infants?

Whole cow's milk can interfere with the absorption of iron supplements in infants due to its low iron content and the presence of calcium and casein, which can inhibit the absorption of iron in the intestine. Infants consuming cow's milk may not only receive inadequate iron from their diet but also face challenges in absorbing any iron that might be present in supplements.

Calcium, found abundantly in cow's milk, competes with iron for absorption in the gastrointestinal tract. Additionally, the protein in cow's milk, particularly casein, can bind to iron and form insoluble complexes that further limit its bioavailability. This is particularly concerning for infants who are already at risk for iron deficiency, especially if they are consuming large amounts of cow's milk instead of iron-rich foods or supplements.

Infants typically require iron for proper growth and development, so avoiding cow's milk until they are older and ensuring adequate iron intake from appropriate sources is crucial in preventing iron deficiency.