Babies younger than 12 month of age who are not breast-fed almost
always need iron-fortified formula. The iron in human milk is much more easily
absorbed by infants than the iron in cow's milk. Formula-fed babies can become
iron-deficient if iron-fortified formulas are not used. Iron deficiency may
cause severe complications in babies, such as weakness, abnormal digestion, and
permanently reduced learning abilities.
Some caregivers may be hesitant to feed an infant iron-fortified
formula because of concern about side effects, such as gas or constipation.
However, these have not been proven by research, and low-iron formulas are not
recommended as a remedy for such symptoms. Although low-iron formulas are
widely available, they should only be used in extremely rare situations on the
advice of your doctor.
Once babies are 4 to 6 months old, they should be given
iron-fortified cereals along with breast-feeding or bottle-feeding.