Moralizing over food preparation nothing new - I have a hard time believing that it is a substitute for moralizing over sexual behavior. Doesn't anyone remember

Moralizing over food preparation nothing new - I have a hard time believing that it is a substitute for moralizing over sexual behavior. Doesn't anyone remember the four food groups? Three square meals? (even though they were marketing ploys to get people to eat more food, they still tapped into this good/bad for you moralizing) Going back even further we can come up with endless examples of food preparation being moralized, two of the most elaborate systems are the kosher or halal laws. The evolutionary psychologists have proposed that elaborate rituals and taboos about food preparation - or the seemingly arbitrary tastes and revulsions people have (e.g. I can't stand marshmallows) are built into humanity to keep people from fraternising with foreign tribes. I'm not sure if I believe this theory, but the fact that the psychologists felt it needed an explanation, suggests that food morality is close to a human universal. Sexual morality has also been observed to wax and wane over generations. Never has the cost of sex been so low because of effective birth control, but there were still times in earlier history where sexual mores were a lot looser than the 1950's USA.