Fellow junk food eaters can undoubtedly attest to the feeling of craving more, even when one thinks they have finished eating. Whether sweet, salty, or savory, junk food is a food of habit and repetition, compelling us to just have one more bite.
There are, of course, evolutionary reasons that we crave these kinds of simple flavors, embodied in sweets or fatty, salty foods. But there is also a more sinister element to our nation's junk food addiction: food manufacturers are manipulating our minds and bodies — spending millions of dollars over decades to engineer food that tastes good, but not good enough to make us stop eating. In addition, they play off of our own evolution as a species to help us develop dependencies on foods even when we know eating them is not in our best interest.
