Oh I'm allergic to half the world, the main ones are "latex foods" which many people with a latex allergy also react to: banana, avocado, kiwi, mango, and nickel foods because I have a nickel allergy, which eliminates whole categories: no seeds, no nuts, no green leafies, no beans except black, no lentils, all grains except white rice and quinoa are a no-no (but in practice I rash with whole wheat and not white) various veggies and fruits like no grapes/raisins, no raspberries, no pineapple (but other citrus is fine), it's a lot. No potatoes, I know that one upsets my stomach specifically but I think that was a separate allergy test. Those green leafies upset my stomach, too. I had also been told by a doc I had ibs a decade prior, but they did no tests at the time when ibs is supposed to be a diagnosis of exclusion (rule everything else out). Lo and behold, quit eating the massive list of allergies, no more "ibs" either.