Breastfeeding is currently recommended by the American Academy of Pediatrics as the exclusive source of nutrition for feeding young infants for the first six months of life. Data suggests that not only are there psychological benefits from its use, but nutritional, gastrointestinal, and host defense benefits as well.
The Department of Health and Human Services has released an Executive Summary. This Executive Summary is titled "The Surgeon General's Call to Action to Support Breastfeeding.
Below is the link to this page: http://www.surgeongeneral.gov/topics/breastfeeding/executivesummary.pdf