Junk food refers to foods with low to no nutritional value to the consumer. They are categorized as either pre-prepared or packaged. Pre-prepared junk foods are usually cooked before the customer makes the order.
Packaged junk foods are processed by companies and packaged in tins, bottles and wrappers and treated with preservatives to make them have a long shelf life. Some packaged junk foods include, salted snacks, carbonated drinks, pastries, cake, chocolate, gum and candy. Junk foods have become very popular around the world, because they are cheaper and very convenient in this fast paced world.