What has to be remembered is that there's very rarely the scientist reading to us from his notes and answering our questions directly. On fact, quite often, we only get snippets of the scientist revealing the "headlines" of their research before fantasy conclusions are displayed for our delight.
We are sold science twice. Once in the product we buy when the science is sound and once before by the media hounds when it is often barely formed.
Any scientific theory which reaches the general populace has been reviewed and postulated on by people who's job it is to make you listen to them. They get money for your attention and thus everything relayed must be attention grabbing.
Primary evidence, vaping.
Vaping has high levels of formaldehyde present. Higher than cigarettes! These scientists have shown this in their research!
Said scientists in Boston (I think) are appalled as the setting they used to produce this result was unusable by anyone wanting a throat left but was done to show that perhaps safety limits should be established.
These are the same people who report on e-cig batteries exploding. They fail to mention the person was using an unsuitable phone charger and considering how many people do that only a very few have issues. They fail to mention that the larger devices replicate how a torch works and thus if they are the spawn of Satan then so are torches.
They don't exist to inform you of information which is useful. They aren't benefactors of an educated society. They don't sell well to people who are rational, calm and wise beings. What they want is a herd of hyper sensitive, over reacting traditionalists.
It just makes sense that America is their favourite playground. It's just made for them.