Isn't it also about the amount of harm or benefit for each?
The articles I saw (years ago) claimed that vaping was a gateway to smoking, but the data showed that vaping just replaced smoking for teens. That is, once e-cigs became available, the same amount of teens were doing one or the other, but more were using e-cigs than cigarettes. So, if the amount of teens doing one or the other remained stable, but e-cig use largely replaced cigarette use, I think you have to consider the teens using the e-cigs. If you removed e-cigs as an option, would they smoke cigarettes or abstain altogether? It seems to me that they'd be more likely (as a group) to smoke cigarettes.
Disclaimer: I switched from smoking to vaping in 2013 and haven't smoked a cigarette since. I use unflavored e-liquid for a few reasons, but, as I understand it, inhaling flavorings meant to be ingested is the primary health risk with vaping. Last I checked, this issue was still under debate.
The articles I saw (years ago) claimed that vaping was a gateway to smoking, but the data showed that vaping just replaced smoking for teens. That is, once e-cigs became available, the same amount of teens were doing one or the other, but more were using e-cigs than cigarettes. So, if the amount of teens doing one or the other remained stable, but e-cig use largely replaced cigarette use, I think you have to consider the teens using the e-cigs. If you removed e-cigs as an option, would they smoke cigarettes or abstain altogether? It seems to me that they'd be more likely (as a group) to smoke cigarettes.
Disclaimer: I switched from smoking to vaping in 2013 and haven't smoked a cigarette since. I use unflavored e-liquid for a few reasons, but, as I understand it, inhaling flavorings meant to be ingested is the primary health risk with vaping. Last I checked, this issue was still under debate.