BTW - many of my clients/program participants have lost significant weight just by making the switch to Level I of Eating for Health as described in my book. And they keep it off too.
I saw a woman not too long ago that lost 60 lbs in 6 months following Level I of EFH. That was 3 years ago and she has kept the weight off and never been happier after having dieted all her life.
Some of my clients have also lost weight by doing the Colonix program. But once again, don't focus on the weight - focus on getting healthy and doing what's right for the body and the weight will take care of itself.