Does ferrous sulfate, thiamine mononitrate or partially hydrogenated soybean oil sound appetizing to you? Follow this rule of thumb: if a food product is made of stuff you need a course in chemistry to comprehend or if you can't pronounce the first 5 ingredients, don't let it near your cart.
Stay focused on buying whole foods comprised of only one ingredient. Instead of snacking on neon-orange cheese curls, slice up some carrots or celery sticks. Invest in an air popper and enjoy fiber-rich popcorn. Make homemade veggie chips: cut up kale, thinly slice beets, sweet potatoes or yams, sprinkle them with herbs and a little olive oil and bake in the oven.