Answer: Babies can't digest cow's milk as completely or easily as breast milk or formula. Cow's milk contains high concentrations of protein and minerals, which can tax your baby'simmature kidneys. Cow's milk doesn't have the right amounts of iron, vitamin C, and other nutrients for infants.
This deficiency is best illustrated by the lack of vitamin E, zinc and iron with cow’s milk being a cause of iron deficiency and even internal bleeding for babies under 12 months old.
The importance of iron in a baby’s life translates into its role of helping the body make red blood cells, a decreased level of red blood cells being known to cause anemia. It’s true that newly born babies have enough iron in their bodies however by 3-4 months of age the iron supply gets depleted, requiring extra iron which needs to be obtained from the baby’s diet. If by any reason the mother is unable to breast-feed her baby, iron-fortified formulas are available on the market to ensure infants get the proper amount that their body needs.