Oh, my goodness. It looks as if you've had alot of differing advice on this! All I can say is while it may not be all of your problem it seems kind of likely that it's at least part of it. In her book Hulda Clark says it takes three zapping sessions to kill all parasites also she said to zap for seven minutes at a time. Read page 15-20 (there is a link at the top of this page that says dr. clark, I think you can read it on there) I think it will be extreemly helpful for you. Hope this helps!