Most U.S. cities are stacked with culturally diverse food options. We can decide on a whim, “I feel like sushi tonight,” or Italian food, or Mexican or barbecue. The list goes on. But just because we can eat almost anything whenever we want it, that doesn’t mean we should. Due to overfishing, animal extinction and health reasons, diners should raise an eyebrow when certain controversial ingredients show up on the menu. Here, we run through six of the most talked-about offenders, along with thoughts and opinions from chefs across the U.S.