My husband is on this , started in March and has lost a stone, it is hard on his fasting days which are Mondays and Thursdays but he is getting there gradually, even though he put 4lb on when we went on holiday.He bought a couple of books about it from Amazon, he has done very well, some weeks he lost more than others and there was a couple of weeks when he gained, but it hss been a good thing for him , especially as he is diabetic and injects insulin every day.I tried it but I fell by the wayside, husband has a very strong will, much better than me.Good luck with it, hope you do well.