Swift on the lips, forever on the hips""-- there's a lot in this-- the avid eater gets fatter faster and avoirdupois is also the price you pay in an affluent society. Dr. Glenn, who makes few concessions, or prohibitions (only some occasional forbidden fruits and other foods) has worked out his PFI (Portion-Frequency Item control) formula and tabulated a great many diets. They are plotted according to height, (over) weight, and desired weight loss and form the bulk of the book which also gives occasional advice on exercise, preparation of foods, restrictions (no soft drinks, limited alcoholic beverages, no dietetic sweets, etc.). Dr. Glenn's advice is nutritionally sound; there is no novelty appeal-- just firm resolve to get rid of flabby flesh and a scientifically pre-planned regimen. One could then assume that this is more likely to do good than well.