E cigarettes gives cancer ... 
So does the sun.
Quote
Yeah they still have their drawbacks like vaping creates formaldehyde, but its 1/1000 less than a cigarette produces.
It depends on the liquid actually:
http://en.esmokinginstitute.com/node/31
I would never recommend vaping as being completely healthy, but then, almost nothing is and vaping is orders of magnitude less harmful than traditional cigarettes. It also tastes better
