My son was never diagnosed with milk protein sensitivity, but I am positive that he is. He was diagnosed with reflux, but meds alone didn't help, and when I cut dairy out of my diet, he started getting better. He weaned at 7 months and has been on soy formula since. He still spits up a lot, but he's off the reflux meds. The pedi encouraged us to introduce yogurt and cheese. He does fine on hard cheeses, but yogurt definitely makes him vomit, big time. Why would cheese be ok, but yogurt not so much? I know some kids take longer to outgrow reflux, but is it possible that he's mildly sensitive to the soy? He never had a problem with soy in my diet while we were BFing.
Re: Question about milk protein sensitivity
My son has milk protein allergy so i just thought i would share, i hope this helps at least a little!
there are many proteins in milk including the casein group and whey protein. There are also other parts such as lactose and milk fat. you can also have a milk allergy or milk intolerance. the only way i think to tell the difference between allergy and intolerence is that the immune system is involved in milk allergy. you can get a scratch test to determine a general allergy but i would only recommend it as a last resort. the other test the doc can do to determine an allergy is a "serum IgE to milk protein" this is a blood test and requires blood taken from a vein, which also sucks.
Here is my experience with milk protein allergy: at 7 months my son had to be hospitalized for an asthma attack (called reactive airway disease at that point) and then at 9 months because treatment was failing (and ONLY for this reason) we got a scratch test, it was pretty rough on both of us
that is how we determined his original set of allergies, including an allergy to milk protein. it was also recommended that we do the serum IgE (antibody test) but i didnt want to do that to him and the treatment was the same with or without the information: no milk, milk products, nothing containing milk, whey, whey protein, caseins, anything. we did the serum IgE on tuesday of this week because he is now two and I am hoping he has grown out of it. mason always had an asthmatic reaction although i have read that you can get nausea and vomiting as well as colic with the allergy.
we did not get any useful info through the ped bc they missed all of his symptoms and their misdiagnosis put him in the hospital. we have since switched, but we did take my son to an allergist and he was able to diagnose him accurately in one appointment. my son also has various other environmental allergies (requiring lots of fun and exciting meds) so our case is probably not typical and therefore definitely not meant to alarm anyone.