If I'm not mistaken, both soy and dairy can also cause atrophy. (Somebody correct me if I'm wrong.) If you are sure you aren't getting cross-contaminated, maybe these things are causing your problem? I would also go through the house with a fine-toothed comb, looking for possible sources of CC. Are you in a gluten-free household, or do other family members eat gluten? How about pets? Most pet foods contain gluten and it is easy to get glutened by dog kisses, or even petting your cat, then eating without washing your hands first. Cosmetics, shampoos, soaps, laundry detergent? All of these things MAY contain gluten.
Or you may be getting glutened at work. I actually got glutened once from someone either playing my guitar with gluteny hands, and then I forgot to wash them before eating, or it was from cookie crumbs left on my table. There are SO many possibilities for CC!
Wow - I've been pretty anal about checking for hidden sources, but the guitar is a new one! Yikes!!! Also hadn't looked into laundry detergent and will check on that now. Thank you!