I'm flabbergasted by the ignorance exposed by many the commenters here. E-cigarettes DO NOT MAKE SMOKE! They create a vapor, that is all. Prejudice and misinformation are quite prevalent around this issue. I find it surprising the normally intelligent and critically thinking readership of the Times cannot see past ingrained prejudices and do a little research before making blanketed false claims about a product they do not use or understand.
While disheartening that there is a lack of studies on the long-term effects of inhaling vaporized propylene glycol and vegetable glycerin, the two primary chemicals used in the vapor solutions, common
sense affirms these are FAR LESS HARMFUL than the 3800 chemicals inhaled through via combusted
tobacco, which include arsenic, carbon monoxide, formaldehyde, benzene, polonium 210, hydrogen cyanide, just to name a few. The list is long, having over 70 known cancer causing chemicals, toxic metals, and poison gases.
Up till two months ago, I was a life-long, 27 year, pack-a-day smoker. I have easily quit the combustion (smoking) habit and I'm steadily reducing the nicotine content of solutions I vaporize. I owe my life to this technology.