At the time of writing this article, remain an unknown quantity regarding the health and safety quotient. They are believed to be safer than real cigarettes on the basis that they do not contain any tobacco whatsoever. But the addictive nicotine that is part and parcel of vaping and the presence of some toxin traces (far fewer than in cigarettes) has led to continued research into the long term effects of this popular 21st century hobby/habit.

The rest of the story is that if you ask the wrong question, you are going to get the wrong answer. By asking the wrong question about the effectiveness of electronic cigarettes, Dr. Glantz has obtained the wrong answer.

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