Hi X,
Well, they do kind of qualify the recommendations following the list with this information.
Despite this diet, for our disorders, typically we find that avoiding entirely or at least limiting our intake of wheat, sugar/sweets, dairy, spices, processed foods, and preservatives, resolves many of our difficulties with food.
Breads are usually a full AVOID item for us. Patients report tolerating Light Rye Bread without Preservatives, a couple of brands make this bread and it’s typically available in most grocery stores.
I can get away with a little dairy here and there. I went wild and bought a loaf of gluten free bread this week, and started itching immediately after eating a slice. I have no idea which ingredient prompted that. So I'm back to my regular old wheat bread which I don't think bothers me, but I've never tried giving up wheat entirely for longer than a few months at a time.
On an unrelated note, I'd read that heat and cold can trigger mast cells. I know I have a problem with heat, but didn't think the cold was a problem. Things are generally fairly temperate here in Portland, but we've had a real cold streak (in the 30s) with plenty of sun. So the other day I was feeling halfway decent and decided to attempt a short walk (10 blocks). I didn't have any PEM at all, but my skin itched and burned all the next day, and then just burned for the second day. Extra zyrtec seemed to help a little, but boy did I learn my lesson about dressing properly for the cold.