When you say you got two people to quit, does that mean they eventually gave up the e-cigarettes, or just that they've switched from one form of smoking to anot

When you say you got two people to quit, does that mean they eventually gave up the e-cigarettes, or just that they've switched from one form of smoking to another? If you're vaporizing tobacco extract, is that any better than smoking from a health perspective? (On a related note, since you mentioned toxicity... the lack of any sort of standards or certification for e-cig "juice" really makes me nervous about the whole field. It wouldn't surprise me if some of the brands out there could cause damage to your lungs in the long term... we just don't know yet. I've got a friend who makes juice as a business, and it really is just something done in his kitchen, and faith that his ingredients aren't harmful when inhaled.) Hopefully this doesn't come off as sounding too critical. Just questions I keep thinking of, especially since I've had several friends go from non-spokers straight to using e-cigs (rather than using them to quit smoking), since they're promoted as being safe.