Which scenario represents the highest risk for iron deficiency anemia among young children?

Which scenario represents the highest risk for iron deficiency anemia among young children?

• A. 4-month-old exclusively breastfed infant
• B. 10-month-old who recently switched from formula to whole milk
• C. 11-year-old who drinks iron-fortified cereals
• D. 3-year-old drinking water only

Answer: (B)

The main idea is how early dietary choices affect iron sufficiency in infancy. Iron stores at birth support the first few months, but after about 4–6 months a growing infant needs dietary iron from fortified formulas or iron-rich foods. Whole cow’s milk provides little iron and can even contribute to iron loss through minor GI irritation and occult bleeding. Introducing cow’s milk before 12 months reduces iron intake when the body’s needs remain high, making iron deficiency anemia more likely. In the scenario given, a 10‑month‑old who recently switched from iron‑fortified formula to whole milk is at the highest risk because the switch removes a reliable iron source right when iron needs are increasing and stores are depleting. The 4‑month‑old exclusively breastfed still has some iron stores but is not yet in the stage where a switch to low‑iron milk would have the same impact. The 11‑year‑old consuming iron‑fortified cereals has a pattern that supports adequate iron. The 3‑year‑old drinking water only lacks iron, but the specific high‑risk transition before age 1 to cow’s milk is the strongest risk factor highlighted here.

The main idea is how early dietary choices affect iron sufficiency in infancy. Iron stores at birth support the first few months, but after about 4–6 months a growing infant needs dietary iron from fortified formulas or iron-rich foods. Whole cow’s milk provides little iron and can even contribute to iron loss through minor GI irritation and occult bleeding. Introducing cow’s milk before 12 months reduces iron intake when the body’s needs remain high, making iron deficiency anemia more likely.

In the scenario given, a 10‑month‑old who recently switched from iron‑fortified formula to whole milk is at the highest risk because the switch removes a reliable iron source right when iron needs are increasing and stores are depleting. The 4‑month‑old exclusively breastfed still has some iron stores but is not yet in the stage where a switch to low‑iron milk would have the same impact. The 11‑year‑old consuming iron‑fortified cereals has a pattern that supports adequate iron. The 3‑year‑old drinking water only lacks iron, but the specific high‑risk transition before age 1 to cow’s milk is the strongest risk factor highlighted here.