Quoting White Chocolate Milk:" <blockquote><b>Quoting Anja[VBA2C GRAD]:</b>" I think that allergies are brought on ... [snip!] ... fine. I actually know more kids who didnt have things like eggs and nuts until 18 months or later and they have allergies."
I breastfed my oldest and we started giving him tastes of food around 3 months old (chocolate, ice cream, mashed potatoes, anything mushy basically) and he has no allergies so to speak. I am allergic to dog nails (I found this out as a teen when I used a dremel to trim my dogs nails and broke out in hives) and allergic to my cats (again break out in hives if I get scratched or am locked in a room with them that has no airflow then my throat closes). The dog nails came up when I was 14 and did the dogs nails by myself for the first time and the cat came up when I was 17. So far neither of my kids are allergic to the cats of which we have two.
So in my experience early exposure has nothing to do with it, though it may for some kids with under developed systems or that are fed formula.