It’s the genetically altered foods. Our grandparents and out parents didn’t grow up with all these foods that have been genetically altered for mass production. There’s another article on wheat gluten that explains how the wheat of today and wheat of our grandparents differs all you have to do is search FR for gluten and it will come up. It’s a very good article and reinforced to me why I am now 3weeks gluten free and feeling so much better.