Hi alottolose,
All the weight I've lost was on dukan, apart from the first 3.5 lb which came off in the week and a half between deciding to do it and actually starting, don't know how - perhaps was just in the right mindset. My start date was the 20th November, so yes - over the past month I've lost 16.25 lb, as i'm up to 19.75 total loss overall.