The two books are about the same diet. I have both books. I think the focus of the books is different. In Dr. Atkins' New Diet Revolution, there is a wealth of information of the sceince behind the diet. I think this book is geared toward those embarking on the program. I think there is a lot more info in this book on how to do the initial phases of the diet. I recommend that you get this book from your library too. If you are just getting started, I think this would be the more helpful of the two books.

I agree with the comment above, that the focus of Atkins for Life is controlled carb eating for the rest of your life. There are lots of practical tips and many menu plans and recipes. The meal plans are for those who are ready for higher carb counts -- 45, 60, 80, and 100 net carbs per day.

Just my two cents.