Please, do some research on this. From what I know, your body will, kind of, go into... panic mode, like you're actually starving, and use up the last calories you put into it. so, you're really not... well, saving calories. things just go downhill after your body uses up those... hair loss, for one. plus, any water that you drink will add water weight, and since you're not eating, there's no food to absorb it, so you'll gain water weight. I mean, you're not losing a significant amount of weight... at least not for a while.... I mean, yeah, if you do it long enough, you'll get results, but, feel like shit and run down and tired and it's just.. horrible. I can't even begin to express the long lasting affects it has on your body! just find out for yourself. I'm not really the person to look to for medical issues, but these are just some things I know. I mean my facts might not be 100%, but I think you get the general idea. you should really go to your doctor and say you're serious about losing weight, and you two can work out a workout/diet plan.