Just had a quick read of the post - will come back when am more with it as currently got a horrid stomach bug ..... anyway - some people (like myself) are intolerant to the whey proteins in the milk - in "normal" formula they are destroyed, and also in most other dairy like cheese, yogurt, etc. - don't quite understand why, but if you heat milk to 72c (a Norwegian friend's lo has the same and was told about this!!) it kills the whey so it fine - her lo just drinks the toddler milk instead of "normal" milk - I don't understand this as milk is pasturised already so would have thought it would be killed then!!
Anyway - I am fine with all dairy, even normal cows milk used in cooking,etc - I just have to make sure the milk has been heated enough. My symptoms were red, spotty skin on my face, and if I were to drink a glass of milk now I would get really gassy quickly. M's symptoms were (since not being on bw I have hardly spoken about poo!!) squashy poos, like cake mixture! Both him and Oliver as babies would get hiccups a lot when I had dairy (even in the womb, now I think about it) and Oliver used to bring up a lot of milk.
It's hard to say if M has totally outgrown it as he is toilet trained, but O is def more tolerant with dairy, not bringing up milk, etc.
Forgot to add - both boys and myself used to get really snotty, and M and I had ear infections (O has had none and I have been mainly dairy free and he is 100% for his own food) as children.
HTH - please pm if you want more info or there is more input on this thread and I will come back and read (my cold turkey is going pretty well but since I am here and Mum is here to look after the boys I will have a quick skim!!)