Don't ingest foods made in places where everyone is required to wear a surgical cap.
Eat only until you're 4/5 full. An ancient Japanese injunction.
Perhaps more than any other, the food industry is very sensitive to consumer demand.
Eating's not a bad way to get to know a place.
People don't eat nutrients, they eat foods, and foods can behave very differently than the nutrients they contain.
You are what what you eat eats.