my opinion on this is that at age 1 you can start giving whole milk, but it doesn't mean you have to stop formula. If breastmilk is supposed to be best until age 2, and formula is a breastmilk replacement, then why not give forrmula unitl age 2 as well? I have never really understood the need to suddenly take baby off formula at 1 year. Personally I give whole milk at meals, and breastf fed the rest of the time. I still give my 3 eyar old whole milk, partly becasue I have it in the fridge anyway, and partly becasue he is skinny and could use the extra fat.