I quit smoking nearly 2 years ago using the cold turkey method; I haven't touched tobacco since. Yay me. (pats self on back) The motivation for this quit started with a heart attack and a three day stay in the hospital. Afterwards I went to a tobacco cessation class hosted by the same hospital that treated me for my heart attack. I was told in that class that there was not enuf information available to determine the safety of e-cigarettes so the hospital staff could not recommend their use. This safety statement causes me to laugh because nobody ever considered the non-safety of a cigarette when they started smoking. My two cents on the matter is this: cigarette tobacco contains nearly 7000 different chemical of which none are healthy, many cause cancer. e-cigarettes have only about 12 different chemicals. The e-cigarette fluid that is vaporized is propylene glycol. Propylene glycol is used in food stuffs and is considered safe by the USDA and has been used as such for decades. Propylene glycol is also used by all major automobile manufacturers as anti-freeze, to save our pets. Ethylene glycol is deadly to dogs when ingested. Based on that info, i believe e-cigs to be much safer than tobacco and at least as safe as any other Nicotine Replacement Therapy. I mean really, how safe is transdermal nicotine anyway?