[420basteit]

There is reason to consider this a possibility, since many molecules may be potentially harmful when inhaled as vapor, with unknown health effects (ie vitamin E acetate), but under combustion would deteriorate mostly or entirely into the carbon forms that have well understood effect on health -- as a previous commenter mentioned, 10yr lifespan reduction from long term continuous cigarette use.

There is just not longitudinal data available for vaporizing plants or synthetic nicotine/thc concentrates. It could be an even higher lifespan reduction than smoking!

[viklove]

> with unknown health effects (ie vitamin E acetate)

The effects of Vitamin E Acetate is actually well known and thoroughly documented. It's just that these black-market producers don't care.