Thoughts on Detox

I've been plugging along since November and I'm down about 35 pounds thus far. Lately I've been going to a Natruopath and he's urging me to do a detox. It would consist of no dairy, sugar, white carbs or caffeine for 3 weeks; vegetarian for the first week.

Does anyone have experience doing something like this? He's telling me that this will help me in my weight loss longer term and will push me through a plateau.

My big concern is that I've been doing about a pound a week up until now and my philosophy has been about moderation, not deprivation. I know three weeks isn't very long but I'm a bit freaked out about knocking myself off track by over restricting intake.

Appreciate the thoughts.