Sounds like this initial scientific study is related to exposure while working with the chemical. Something people like us are directly related to.
It's funny to joke about this stuff coming out of California, but the people behind these scholarly studies are the smartest in the world. My wife has two scholarly articles published in cardiology. For this information to get this far, it's rock solid.
Theres still pin heads dumb enough to think smoking is ok. The mos of the world will rationalize their current views. If u don't have common sense to think this chemicial is impacting our health, you don't get to live longer than the smoker, obese or heavy drinker. Life's about choices!