I understand the place you're going with this, but it is the only modern day that understands the "evils" of agriculture and the disease and degradation of the human species collective DNA. On the flip side, it has allowed us to specialize in other matters and we are now seeing a higher percentage of our population with higher IQs and have the ability to prevent extinction level events, asteroids, that no other species on this planet has ever been capable to do. Nomads and tribal people might have seen cities as making people weak, but it wasn't because of our modern reasons.
I think the "science" of healthy eating, especially in the U.S., needs to be completely thrown out and rebuilt without any preconceived notions of what a healthy diet really is. Agriculture most likely started by growing fruits, vegetables, and nuts, things that don't require processing. I guessing it was most likely started by a woman... which I guess might be why it was Eve who plucked the apple from the tree. Women invented agriculture and got us kicked out of the paradise of living a hunter-gatherer life.