What is a primary reason for starting iron supplementation in exclusively breastfed infants at 4-6 months?

What is a primary reason for starting iron supplementation in exclusively breastfed infants at 4-6 months?

• A. Human milk is low in iron content.
• B. Infants stores are sufficient until 24 months.
• C. Cow's milk provides ample iron.
• D. All infants are iron-sufficient.

Answer: (A)

The main idea is that after about 4–6 months, an exclusively breastfed infant begins to outgrow the iron provided by breast milk because iron stores from birth are finite and the amount of iron in human milk, while well absorbed, is small. As the infant’s growth accelerates, iron needs rise, and relying on breast milk alone no longer meets those needs. Therefore starting iron supplementation around 4–6 months helps prevent iron deficiency and supports development. Cow’s milk has little iron and can interfere with iron absorption, so it isn’t a substitute for iron fortification. Not all infants remain iron-sufficient beyond this window, especially those exclusively breastfed, which is why supplementation is recommended.

The main idea is that after about 4–6 months, an exclusively breastfed infant begins to outgrow the iron provided by breast milk because iron stores from birth are finite and the amount of iron in human milk, while well absorbed, is small. As the infant’s growth accelerates, iron needs rise, and relying on breast milk alone no longer meets those needs. Therefore starting iron supplementation around 4–6 months helps prevent iron deficiency and supports development. Cow’s milk has little iron and can interfere with iron absorption, so it isn’t a substitute for iron fortification. Not all infants remain iron-sufficient beyond this window, especially those exclusively breastfed, which is why supplementation is recommended.