Hello there! I've been on a juice fast six times during the past two years. During the first four juice fasts, I didn't loose a pound! I was a little bummed about it so I can understand your frustration, but on the other hand you have to consider that juice fasting is a great way to cleanse your system, to gain energy and to re-evaluate your diet. However, I don't think it's really meant to be used as a weight-loss plan to loose weight permanently.
I have been on a doctor supervised diet since the end of February, and I have lost 25 pounds so far (and I'm planning on staying on this diet for another year or so). If you want to lose 35-40 pounds, I'm more than happy to tell you a little about how my diet works...it's sooo easy! Let me know! Maybe it works for you as well!