I remember Nutrition 101 at my alma mater, the University of Illinois, Champaign-Urbana, when I was taught 4-4-7-9. Anyone remember that? It meant four calories per gram of carbohydrate, four calories per gram of protein, seven calories per gram of alcohol and nine calories per gram of fat. By the time I was graduating, rumor had it that not all fat calories were the same. And today we also know that not all carbohydrate calories are equal. But unfortunately, somewhere in between, Americans forgot that whatever their worth, calories are ultimately what counts.