The American Academy of Pediatrics recommends breastfeeding
According to the AAP, "Human milk is species-specific, and all substitute feeding preparations differ markedly from it, making human milk uniquely superior for infant feeding. Exclusive breastfeeding is the reference or normative model against which all alternative feeding methods must be measured with regard to growth, health, development, and all other short- and long-term outcomes. In addition, human milk-fed premature infants receive significant benefits with respect to host protection, and improved developmental outcomes compared with formula-fed premature infants… Pediatricians and parents should be aware that exclusive breastfeeding is sufficient to support optimal growth and development for approximately the first 6 months of life, and provides continuing protection against diarrhea and respiratory tract infection. Breastfeeding should be continued for at least the first year of life and beyond for as long as mutually desired by mother and child."
A.A.P. Breastfeeding Policy Statement: Breastfeeding and the Use of Human Milk Pediatrics Vol. 115 No. 2 February 2005