Well I can tell you this about gluten, and I heard this during my education.. That over the past 100 years they increased the amount of gluten into the food, wheats especially and they often add more of it in the bread itself.
Even people that normally don't have any reaction can get ill when they are older because the overdosing on this stuff just made them not tolerate it anymore.
So what they were saying is that basically it is not healthy to eat in any way and the best way to eat 'healthy' bread (without that gluten overdose) is when you bake it yourself.
Sucks though I guess, having to rely on other foods but bread, although that could be just how one sees things.