The results will depend on the individual. There are many factors involved, but ultimately I agree with the last answer that your weight loss will slow drastically after a few days because your body will try to hang on to any excess it can. It is really not a good idea to do a complete fast. You can't keep it up forever so once you do start eating again your slow metabolism will mean you will pile on the pounds. You will likely end up heavier than you are now. The best way to lose weight is to create some healthier eating and exercise habits. You can't take short cuts - you will only end up disappointed. Anything that promises quick fixes is usually a sham.