Gosh, I wish I had gluten problems. I used to be able to eat like crazy(like my dog) and never gain weight. But somewhere between 30 and 40 I lost that ability.
Still, even after you've achieved satori in real time (no wheat in diet ~ btw, I've been using the term "wheat" as shorthand for "gluten") you can still have an accidental exposure.
For example, you visit your grandmother. She offers you a chocolate candy. You look at the box and it doesn't say "chocolate liquor" ~ so you feel safe. Oh, oh, grandma forgot to tell you she's been buying some cheaper chocolates lately, and she just keeps filling up that 20 year old box.
You'll be blowing up before you get out of the house, so you stick around another hour or so, and there it is ~ you've been attacked!
For the curious, it's not like lactose intolerance ~ but just as bad.
Another source of poisoning is soy sauce ~ everything but LaChoy and Richfood is made with wheat. And then there are the corn tortillas (made with wheat), gravy, Swedish Fish (actually sweetened with wheat paste), and virtually every candybar on earth except SNICKERS!
Obviously a well-traveled and eperienced gluten intolerant person finds shopping a breeze ~ just stop by the store and pick up a few things ~
And you guys thought "Gee, that's crazy, why did those Chinese think they could get away with putting melamine in dogfood? Think ~ melamine is just another protein ~ like gluten ~ and without a "test" it's easy to put it in everything, and boy do they!