thanks again; your info comes at a good time as I need to make a decision soon, I could not find anyone to talk to who had tried it. I would not have thought about brining my supplements that is a great tip. Also all of your details about how something can be good for you for a while and about problems existing in layers are great reminders -these I often overlook or forget.
Oh and another question-do you feel that this is something that the dr. needs to be very good at for it to be accurate or do you feel that the machine is what does all the work? (Im still a bit confused about exactly how it works even though I have read up on it)