We all eat junk food, we know its not healthy but most the time its quick and easy, also taste good. The sugar and salt in the products always keeps you coming back for more.  In recent studies, they are trying to determine what makes junk food so popular. They have found that how the products are marketed to consumers is what increases the sales. 

If they start to market healthy foods in the same way they market junk foods, we could see a rise in healthy foods sales. All research shows this to be true, but does not really seem to be working. It all comes down to the fact that no amount of marketing makes you want to snack on carrots over chips. Junk food will continue to be popular and shows no signs of slowing down.