Been Paleo/Primal for almost a year (as of start of 2012) and have lost over 20 lbs, 5 inches of my waist, and have quite a bit more energy. Still have a long way to go but I am enjoying life. I have been falling off the wagon occasionally but it is really just reinforcing the benefits of this lifestyle as when I do the waist comes back quickly, and all of the grain related reactions that I have come back fast and hard. I don't think I will be relapsing too often from now on.