The authors of this study make one of the most cardinal errors in all of epidemiology. They ignore the principle that "correlation does not equal causation."

The impression I am left with is that the entire harm reduction debate is a toxic one, with venom on both sides, which is leading to irrational thinking, blind adherence to ideology, a focus on ad hominem attacks rather than rational scientific discourse, and a biased perspective on the scientific evidence.

It shouldn't take a rocket toxicologist to figure out that electronic cigarettes - which contain no tobacco - have immense benefits over traditional tobacco products. It shouldn't take a rocket epidemiologist to figure out that eliminating almost all of the more than 10,000 chemicals and 60+ carcinogens in cigarettes is going to result in a safer product. And anyone who has read the numerous laboratory, toxicology, and clinical studies of electronic cigarettes and tobacco cigarettes should understand that vaping is much safer than smoking.

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