Cancer-causing benzene found in e-cigarette vapors operated at high power
sciencebulletin.org
sciencebulletin.org
And how do they address these concerns? The burning process that creates benzene and formaldehyde also creates a terrible taste. It's like warning users to be careful with frying pans because food and oil that is burnt to a blackened husk has carcinogens.
Additionally, only one of the devices had benzene formation within stock power levels.
The 2015 study mentioned has similar flaws.
I'm fully aware that vaping is not a healthy decision, however, it's certainly significantly safer than smoking analog cigarettes.
While I'm sure that avoiding any unnecessary benzene exposure is the best plan, it does sound like e-cigarettes are at least quite a bit less risky than regular cigarettes. So although e-cigarettes are not the risk-free panacea that a lot of users would like them to be, they still might be the better of the two options.
From https://en.wikipedia.org/wiki/Benzene#Benzene_exposure_limit...
> The U.S. Occupational Safety and Health Administration (OSHA) has set a permissible exposure limit of 1 part of benzene per million parts of air (1 ppm) in the workplace during an 8-hour workday, 40-hour workweek. The short term exposure limit for airborne benzene is 5 ppm for 15 minutes. [...]
> The U.S. National Institute for Occupational Safety and Health (NIOSH) revised the Immediately Dangerous to Life and Health (IDLH) concentration for benzene to 500 ppm.[...]
If someone is going to smoke all day, I think that it's more appropriate to use a threshold similar to the one for workers (1ppm) or perhaps a smaller one like .1ppm.
> This estimate assumes no threshold for benzene's carcinogenic effects.
This is probably not true, but it's better to err in the side of caution, without being alarmist.