Here are a few fun facts and tips about oatmeal; People buy more oatmeal during January than any other month. Oatmeal is the first product given FDA approval to carry a food-specific health claim. Oatmeal is a whole grain cereal made from oat groats. It has the bran, germ and endosperm. The difference between quick oats and old-fashioned oats? Quick oats are cut into smaller pieces, so they cook faster.