Was this written by a child? spelling mistakes and bad grammar... Really?? This article is pure unsupported speculation. First of all nicotine is the chemical that causes the restriction of blood vessels... whether its from cigarettes or e-cigs, and without nicotine its pure placebo that most people wont find success with. Secondly "nearly 66,795", if your going to quote a specific number like that saying nearly just clearly shows that your exaggerating your numbers... and that's out of 400,000. Yet your trying to state the percentage value that's relevant to barely a quarter, as though it applies to every vaper. "people who vape are twice as likely to also smoke traditional cigarettes as are those who don't vape" well that sentence is meaningless as people who vape probably have smoked before, and most people who don't vape, choose not to because they never smoked to begin with, except feeble minded trend sheep. Utter stupidity, go back to school.
Utter drivel.Read the reply to this study by Dr Farsalinos. It shows that this research is badly done and proves no such thing. I would link it here but i'm sure my comment would never appear if I did.
PS. Proponuję trochę zmienić tytuł wątku, bo te dowody nie są zbyt "twarde"...