person A: When I go out to a restaurant_comma_ I order gluten free food items.  I have to trust that the cook and server take my request seriously.  If not_comma_ my food could be "gluten free" but cross contaminated with foods that aren't and still make me ill.
person B: What kind of illness occurs if food is cross contaminated? I'm so sorry this happens to you.
person A: If it's mild_comma_ just stomach pains for a few days.  If I were to say_comma_ eat a bun that was supposed to be gluten free and it was full gluten_comma_ my joints also inflame.  So you see it can affect more than just my stomach!
person B: You suffer from it more severely than most people I know_comma_ this can be devastating to people. 
person A: Inflammation is the devil.  I'm just glad I found out how to manage it to improve my quality of life.