http://www.newsweek.com/why-pizza-so-good-978590 > If you find donuts, pizza and cheeseburgers difficult to resist, your flimsy willpower isn't necessarily to blame as a study has found our brains are programed to crave the double-whammy of carbohydrates and fats.  > When we are faced with foods both high in fat and carbohydrates, like many processed foods are, the part of the brain in charge of processing reward is kicked into a higher gear when compared with foods high in one or the other, according to a team of researchers in the U.S., Germany, Switzerland, and Canada.