The deadly one for me is dairy. It's omnipresent and I've attributed its component parts to symptoms ranging from brain fog to elevated heart rate to inflamed j

The deadly one for me is dairy. It's omnipresent and I've attributed its component parts to symptoms ranging from brain fog to elevated heart rate to inflamed joints. Fortunately whey seems to be an exception, so protein shakes are OK. Cut out dairy and avoid most sugars, and I have very few remaining issues. But I also admit my experience is personalized; everyone probably has foods that they aren't compatible with, but can tolerate "enough" to dismiss for a single meal - and people who never encounter long-term issues just happened to get lucky.