Hmm I dont have join pain, or auto immune response.. however my stomach hurts for a bit if I eat certain nightshades for sure, like tomatoes, and eggplants, and sometimes tomato sauce. I'm still experimenting with others. I'm thinking this is a good reason to give them up, or at least the ones that seem to bother me.
My stomach also feels "notty" if I eat white rice. Has anyone else had a similiar experience?