L.K.
I do like them but they are geared mostly to the calorie - fat - sodium content.
I can't remember which book it's in, but the one example that always sticks in my head is it is OK to Eat Life Saver ice cream with all the artificial colors, flavors and ever sweeteners in it but it's NOT OK to eat an ice cream with 2 ingredients because it's higher in fat and calories.
Overall though I think it's good info.