Re: ...aaaaand, smoking cigarettes doesn't cause cancer!!
I lived through the 60s and 70s too. And I remember these studies sponsored by the tobacco companies.
One question, though... Which huge companies are backing these studies? The tobacco companies have been actively trying to discourage and outlaw e-cigs because they cut into their profits. It's only recently that they've taken an "If you can't beat them, try to take them over" attitude.
Excepting these guys, who would rather you stayed with cigarettes, here are no big multi-billion dollar companies in the e-cig business who can afford to sponsor studies or buy politicians.