Welcome to the 21st century, where the low-fat diet is slowly but definitely on its way out to make room for a higher fat, lower carbohydrate diet. For decades we have been following the faulty advice to reduce our fat intake to a bare minimum while increasing the amount of sugar in everything. Even a well-known brand of packaged macaroni and cheese contains added sugar, leaving us wondering why noodles and cheese might possibly need to be sweetened.