I have Michael Mosley's new book on order "The 8 Week Blood Sugar Diet". It should arrive Thursday from the U.K., and I plan to start on Monday. I was very interested in this book because I have pre-diabetes, and he has a version of 5:2 in it suited for diabetics. You start on 800 calories per fasting day instead of 500, the reasoning being that for those of us with blood sugar issues, 500 is HARD, and I agree. It was very hard for me to stick to, with my out-of-whack blood sugar and resulting hunger.
Anyway, I'm glad I'm finally doing something. I could have waited two months for the U.S version, but I'm anxious to start low carbing/5:2ing sooner than later. I'd rather those exorbitant shipping fees to amazon go toward this book instead of another wasted month at Weight Watchers!