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.

For this reason, the FDA should think long and hard before jumping into a decision to ban the flavors in electronic cigarettes. It is possible that despite encouraging experimentation among some nonsmoking youth, flavored electronic cigarettes may actually have a net positive effect on the public's health by serving as an overall deterrent to youth smoking.

I can only hope that science will be restored to its rightful place in tobacco control and public health. But right now, I am not at all optimistic.

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