I'm allergic to citrus; tomatoes, and all citrus fruits. I break out from some sharp cheeses. I am allergic to salmon and maybe some other fish. Chocolate :((
I think I was allergic to the formula because my mother said I threw it up constantly (which can be a sign of food allergies). I've tested allergic to corn and grapes but can eat both.
According to my allergist, anyone can develop food allergies to any thing and they can come and go. If you avoid something for 6 mos to a year, you should be able to eat it again in limited quantities, except for really severe allergies or something like peanuts. Some stuff is much worst than others, for some reason.
Colostrum, which is what the mother produces first, helps seal off the lining of the stomach and intestines in something called *gut closure*. It helps prevent larger proteins from passing through the intestinal wall and causing an allergic reaction.
All I know is that I've got three very healthy kids with no food allergies even coming from a strong family tendency towards it.