I dont know a lot abt juice fasting, but I know is that juice fasting can help you to overcome addiction, and that you shoudnt take any kind of drugs during a fast. There's something else you can do if you want to lose weight and have the benefits of fasting its the warrior diet. My brother did that and he's still on this diet. Go to google and write warrior diet. You fast the day and eat at night. During the day you can only drink organic juice or if your really hungry eat fruits or vegetables. Go visit the site it will give you more information and in the same time go to google and write warrior diet and aging. I hope this helps you. I hope after the fast you wont eat like a pig, you know what I mean. I dont want you to gain back all the weight you lost, that will be sad, all that work for nothing.