It was common knowledge years ago that those suffering from celiac disease needed to have gluten-free food. It seems that calling for gluten-free food has become fashionable, even for those whom have never suffered from celiac disease. I know of several people who insist on gluten-free food and say that they "feel much better" by eliminating gluten from their diet.
Is this just a fad? Personally, I do not have a problem with gluten, or with eating gluten-free alternatives. I can't readily taste the difference.