hi. I am about to do my first one without it and will let you guys know, but from what I have heard and read beyond dr. clark is that parasites can cause inflammation and other things, getting in the way of *full* removal... or at least the most efficent methods of removal..
i was a non believer of zappers for along time but have had so many profound experiences with mine now that i've been converted. heh.
i woudl still love to find some hard Science documentation showing speciic analysis, images and such of the nastiness supposedly destroyed with zappers and herbal programs..
not sure how much of this stuff has been published yet, but until then, i'm going to keep zapping!