In other words, the anti-smoking movement is violating the first principle of public health practice by doing public health harm.

With the exception of aluminum, the concentrations of most metals were substantially lower during vaping than in the no vaping condition. Metals therefore do not appear to be a significant health issue at this point in time.

"Only 1.8% of children are regular users; 90% of regular or occasional users are young people who are already smokers or ex-smokers; 91% of young people have not tried an electronic cigarette even once; and this is despite the fact that over 80% of young people are now aware of e-cigarettes (up from under 70% in 2013)."

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