My cousin, who's staying with us as she makes a move to Atlanta, just completed a 15-day juice feast. She's never been very overweight, but wasn't at her healthiest. Prior to her feast, she had dabbled in raw foods, but was really eating a pretty typical Standard American Diet.
During the 15 days, she took no supplements, went for short walks , and had at least 1 green juice each day. She lost 8 pounds and described her skin as "clearer than it's been in a long time."
She enjoyed the feast (possibly because I did most of the juicing), and even though she had some cravings for crummy fast foods and other not-so-good-for-ya stuff, she didn't find herself tempted to act on those cravings.
Today she starts her transition back to real food. She had a juice for breakfast, and she's planning to keep to a high raw, high vegan eating-style from this point onward. I'm sure she's sick of my warnings: if you go back to your old way of eating, you'll gain back the weight you lost AND MORE . .. MORE . . . MORE!!!
I don't mean to be a Debbie Downer, but I think it's good to know what you're getting into and what the long-term consequences could be.
As for me, I'm still juicing!