A sensible discussion of the truth of calories, low-cal diets, and fad diets like low-carb, low-fat, and all that. The very best chapter is the one that makes clear that no matter how you choose to lose weight, altering your eating habits to a reasonable level (not low) and adding exercise to your weekly life is going to have to be key -- even radical surgery requires altering your eating habits and is not a quick fix.
One caveat -- I found the recipes included to produce inedible food; they claim that they developed and tested them in a church basement kitchen for large groups of people, and boy, they taste like it. I wanted to like them, but I just didn't. Get yourself a subscription to cooking light and use the daily calorie recommendations and menus in the book as a guide to how to divide up your meals and cook yourself some good food. Unless you like church basement food (and you know who you are), then by all means, go for it.