HK, is it correct to say your DD is a highly unusual case, though? I wouldn't think it would be a good idea for someone like her, but for more garden-variety food allergies, perhaps. My friend who did it with her child is married to a hot-shot physician, so I know they did their homework. The child is going on 2+ years with no issues, though it's fair to note that she also outgrew some of her other food allergies.
I find food allergies mysterious and odd. I tested allergic (using skin testing, some reactions were 3+) to a number of foods that I eat regularly. On the other hand I absolutely cannot eat red meat at all without serious GI distress. This doesn't really matter since I am a vegetarian. I think it is possible that I was sensitized by the bite of a Lone Star tick--they are finding this can cause allergy to mammalian meat.
