i noticed a little while back that something in commercially available white flour was messing with my intestines something nasty. i switched to whole wheat and the problem completely resolved itself. now, here's the thing - white flour really is a pretty horrific thing to consume, when you look at what you're eating. it's consequently not that whack to think people are really noticing a difference when they switch their bread, even if the gluten issue, itself, is being over self-diagnosed something ridiculously.