The World Health Organization and AAP recommend exclusive breastfeeding through 6 months of age; after this age-appropriate complementary foods are typically introduced under pediatrician supervision. First foods often include iron-fortified baby cereals such as Else Super Cereal as well as pureed fruits or vegetables.  The AAP now recommends early allergen introduction to foods such as tree nuts starting at 6 months of age rather than 2 years of age.