A small book that contains everything you ever wanted to know if the amount of calories, proteins, lipids, sugars from foods every day: meat, meats, vegetables, fruits, but all convenience foods trade .. . very informative! All this usually expressed per unit (it's easier to know the calories of "an" apple "than 100g of apple). We realize we think and eat healthy and that n is not ... Not necessarily very good for morale! Use a magnifying glass if you are very farsighted ... not expensive at all and indispensable, if only to make small informative family games!