Functions Breast milk is the perfect source of nutrition for infants.
Breast milk contains appropriate amounts of carbohydrate , protein , and fat .
It also provides digestive enzymes, minerals, vitamins , and hormones that all infants require. Breast milk also contains valuable antibodies from the mother that can help the baby resist infections. Breast milk is not a rich source of iron but healthy infants have adequate iron stores to last until 8 months of age. Cow's milk by itself is inappropriate for infants less than 1 year old. The infant or can develop an allergy to dairy products if given cow's milk to early in life.