This is entirely anecdotal, and n=1, but I have seen a sailing YouTuber who claimed that she was unable to tolerate gluten in the USA, but once in Europe there was no problem. She assumed that it was related to agri-chem in the USA.
Does anyone know which grain related agricultural products are used in the USA and not in the EU?
My partner has celiac, and has mentioned something like this, but rather than chemicals, it purportedly had to do with heirloom seed strains. europe apparently has more variation among the same crop, and they're also closer to the things our body evolutionary expects since that entire region is much older w/r/t western diet. the USA has basically been hyperoptimizing a monoculture in relative isolation to such a degree that it's kindof its own thing, and some people's bodies don't tolerate it well. now, is this actually supported by a mountain of evidence? I don't know. But at a glance, it at least sounds plausible.
Does anyone know which grain related agricultural products are used in the USA and not in the EU?