Quotes from Mr. Pollan's book that you should consider:
"Don't eat anything your great-grandmother wouldn't recognize as food." Meaning, back in the day, there were not a lot of fancy "non-food" food ingredients.
"Don't eat anything incapable of rotting." Hummmm, just agree'n.
"The shared meal elevates eating from a mechanical process of fueling the body to a ritual of family and community, from the mere animal biology to an act of culture." This is a time to celebrate the food and time together. To rejoice in the bounty and the camaraderie.
"So that's us: processed corn, walking." I love corn, but, not in EVERYTHING!