I started Dukan last year in June, after having tried gazillions of diets and none working. I was very surprised that with basically no exercise, eating more calories thatn usual, I lost weight so easily. By September I had lost about 7 kg. Since it was holidays, birthdays etc. I cheated for about a month with fats only but did not gain any weight back. It just stopped. Then, in October I started the New Rules of Lifting for Women exercise program, coupled with Dukan. I lost a lot of body fat that way, and body recomposition started changing. I rebooted Dukan in January, but have not lost weight until now and ahve reached the dreaded plateau. A trainer friend told me that my fiber intake is far too low, that since I am no longer overweight as I was before I need to reintroduce fiber. So, although I ahve not reached my target goal I am basically doing the Consolidation phase, with the carb days on days that I work out. I think Dukan is great for initial weight loss, especially if you have a lot of body fat, but once you drop the weight you may have to recalculate the diet. I do like the 1 day pure protein idea though for the rest of your life. :-)