Hmm Im not sure, ive read things that say otherwise, but theni guess it depends on the breastfeeding? does she mean exclsivly breastfeeding for 2 years? Then maybe as at 2 i would have thought kids were at the age of trying so many new foods and they arent getting the experience till later, i can see them possibly being picky but not necissarily get an allergy. Apparently many cases are diagnosed as allergies when in fact thay are tolerances. Anyway, thats just my opinion, Im not really sure as Im not medically trained or anything. I know I will be b/feeding as I believe thats best for my baby, maybe not for 2 years though