As Long As An E-cigarette Doesn’t Contain Nicotine, It’s Completely Safe.

Hello, to be honest, it is false to say that electronic cigarettes do not harm, but it is very small, much less harmful than ordinary cigarettes.

Opinion and suggestion: In fact, electronic cigarette is a kind of non burning electronic cigarette, also known as “atomized electronic cigarette”. The electronic cigarette does not contain tar components harmful to human health, has no carcinogens and has no potential fire hazard. No poison, no fire source, no pollution, it is a good substitute for cigarettes

-Answer from chief physician Caixia Cui in China.

And another Chinese physician Yunshan Mu doctor answer with more simply and authority:

The regular electronic cigarette is harmless and has no carcinogens. But poor quality electronic smoke will produce carcinogens. In fact, there are already smoking cessation drugs, which are also broadcast on CCTV.

Suggestions: recommend a program to you, which can be found on the Internet.
<Approaching Science> 18/06/2015: Why is it so difficult to quit smoking?

From my point of view,e-cigarette doesn’t contain nicotine is almost no harm when vaping.Actually people live in the world is always takes risk/harm/danger around himself.So,it is completely safe.This is reason why many people choose vaping but refuse smoking.Safe or danger? They do having themself’s choice.