I can eat Multi-Grain, Chocolate, and Honey Nut Cheerios without issue, but when it comes to the original, plain Cheerios, very bad things happen. The only ingredient that I can find in the plain ones that's not in the others is labeled as "wheat starch". Has anyone else ever run into an issue with plain Cheerios, or wheat starch? It seems counter-intuitive that the plain ones would be the worst!