If that’s true, then eating “bad” foods (Big Macs, Slushies, anything made with white flour or sugar) makes you a bad person.
How the Eco-Food Movement Mass-Markets Eating Disorders
Virginia Sole-Smith

This is the liberal form of “purity” in the 5 principles of morality. Conservatives endorse sexual purity, but liberals look at food and lifestyle purity. Both are false hooks to hang your hat on (and weak indicators of actual moral caliber), but suit the sensibilities of each group.