Despite a small increase in polycyclic aromatic hydrocarbon concentrations, there were no significant increases for any of the known or probably carcinogenic compounds.

According to a from the American College of Chest Physicians: "Experts from the world’s leading lung organizations have released a on electronic cigarettes, focusing on their potential adverse effects on human health and calling on governments to ban or restrict their use until their health impacts are better known."

While there is still a lot we do not know about the exact magnitude of any long-term risks associated with electronic cigarette use, vapers should be quite reassured that after at least five years of research into the health effects of vaping, the worst that electronic cigarette opponents can say is: "Well ... they're not harmless."

Second, disclosure of conflicts of interest is essential to achieve the public health ethical principle of transparency. Readers have the right to know if there are any relevant conflicts that could be perceived as influencing the objectivity of scientific reports.

But why is it irresponsible?

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