I understand. Allergies can affect many systems/organs -- skin, sinus, eyes, lungs, mucus, intestinal, circulatory, brain. And many allergies don't develop until after long exposure to high levels (as with latex). Imagine such exposure since birth.
You've found that food labels show beyond doubt corn's prevalence. Anyone can read them.
I've got nothing against corn as a part of our diet, especially in its whole form. And corn's not the only food culprit. But it's saturation has become, IMO, a serious health issue. One that's showing itself more now. And one that ADD/ADHD drug manufacturers don't mind at all. Ask your local elementary school's health staff for the percentage of students taking behavioral drugs. It's scary.