Hi! Kathy (A), do you remember the pediatric allergist that spoke at the MILC meeting here the end of last year (I think). She commented that the only foods in the mother's diet that the baby could be sensitive to were protein based foods (milk, meat, eggs, etc) because it is the protein antigen that can get into the milk. Could someone please explain the physiology then, of how citrus is going to change the composition of the breastmilk enough to cause a colitis in the infant? Remember, that anything that goes into the milk has to go into the blood stream first. As this physician put it (and I can't remember her name for the life of me, but she's from U of C), breastmilk is a derivative of the mother's blood, not the mother's stomach. So, when we talk about the baby being sensitive to something in the mother's diet, I hear you, but I'm not understanding how, unless it is a protein antigen, it can affect the milk so significantly as to change it and cause a problem. I would think something more along the lines of antibiotics the mother is taking would be a culprit.... ?? Are we all having fun yet??? Jan (ibclc)