I went from Atkins to Protein Power and, for me, there were two big differences: Protein Power MAKES you eat a certain amount of protein per meal. for me, it's quite high -- 6 ounces. (It's based on weight, height and gender.) Why does this matter? Because, on Atkins, it was NOT eating carbs that was the emphasis. So you could have a low protein meal. One of mine, when I was in the "I can't stand meat anymore!" phase was to saute zucchini slices and cover them with mozzarella cheese. I miss that on Protein Power.

On the other hand (in addition to what's already been said) Protein Power allows more carbs. I THINK we got a raise up to 40 a day in the new book (Protein Power Lifetime Plan). There's no Ongoing Weight Loss Program and no Induction. You do the same thing from day one to goal. AND you are allowed small amounts of fruit. You just can't go over 10 carbs in a meal.