Yes and I also agree it is great. I gave the book to my dad for Christmas. He is 67 and has been battling diabetes for years. Since Christmas he has dropped from 245 to 222 and his blood sugar has stabilized and he is off all of his medication.
Check out the website here:
http://robbwolf.com/
I recommend reading the quick start guides. If you want to get the book go for it for the in-depth science behind it all. Pretty interesting.