First and foremost regular cigarettes produces many carcinogens, , including formaldehyde, acetaldehyde, and acetone. These three chemicals were tested in the study to see what levels are released when electronic cigarettes are used. The study E-Juice that was purchased at the store (not a custom blend) and was a 50PG/50VG ratio. 100% VG and 100% PG was used as the control groups.

The major problem with Dr. Glantz's argument is that he is considering only smoking-related mortality. The literature he cites deals with mortality only. However, there is more to life than simply its length. The quality of life is also important (although apparently not for smokers, according to Glantz). And cutting down the amount you smoke substantially improves the quality of life by reducing respiratory morbidity.

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