Read Those Labels
Unhealthy fats are part of lots of things on the shelves, like crackers, gravy mixes, cake, cookie, and pancake mixes, and many other packaged foods that often conatin other things you might want to avoid, like artificial colors, refined sugars, and excess sodium. You have to read labels! In general:
Avoid buying things that say “Partially Hydrogentaed”. Giant “Eek” factor. Trans fats are found in commerically prepared baked goods, in margarines, processed foods, and snack foods.
Avoid buying things containing “Conventionally processed” oil: Many prepared foods contain vegetable, corn, peanut, or soybean oil, but the conventional extraction process to obtain these oils involves the petrochemical hexane. Hexane is also used as a solvent and cleaning agent. Hello? Instead, looks for cold-pressed, expeller-pressed, or naturally pressed oils.