Simply, the best way to provide nutrition for an infant. The American Academy of Pediatrics recommends that women breastfeed their children at least 12 months. During pregnancy the mother's body prepares to produce milk for the unborn baby. Breast milk contains important nutrients essential to the health of the infant and enzymes that assist the infant's digestion. Breast milk also provides factors that bolster immunity and help babies resist infections. Research has shown that breastfed babies tend to have fewer early respiratory and gastrointestinal infections, less diabetes later in life, better tooth and jaw development, and (very slightly) greater intelligence. It is the best food for your baby.