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USDA/ARS Children's Nutrition Research Center at Baylor College of Medicine

 
   

   


Does formula interfere with the absorption of iron in an infant's diet?

Formula contains large amounts of iron.  The large amount of iron is adjusted precisely to allow appropriate iron absorption in the presence of calcium and other formula components.  Therefore, it is highly unlikely that formula would reduce the absorption of iron from other foods.

However, studies have shown cow's milk, with its high levels of calcium, seems to interfere with the absorption of iron from iron-supplemented infant cereals.

Iron and calcium enter the body using the same pathways.  When there is a large amount of calcium as in cow's milk, the calcium bumps the iron out of the pathways resulting in less absorption.

Infant Formulas

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