Bisphenol A (BPA) is/was in many hard plastics. Problems come from miniscule amounts of BPA being administered over long periods of time (think Nalgene bottles and plastic cups prior to BPA-Free). The FDA originally recognized BPA as GRAS (Generally Recognized As Safe) but all the studies performed were high-level short-exposure studies. They didn't realize that 20+ years of BPA leeching from bottles and coups would be bad. As it turns out, BPA is a chemical "sibling" of estrogen and causes massive hormonal fluctuation over long periods.
There's a whole movement... If you read the actual study you were referring to, many of the mice died because the prostate cancer would seal off their urinary tract and their bladders would explode within their bodies.
Dat's no bueno in my book.
I think there needs to be a movement within the vaping community to demand high-quality materials be used in our atties. Nothing but 304 SS, lead-free brass, elemental metals (copper, silver, gold, etc), delrin/teflon drip tips and insulators, silicone insulators and o-rings, and Pyrex should be used, IMO.
As far as I'm concerned, I'm not terribly keen on being exposed to carcinogens, considering that's why I quit smoking and started vaping...
Sent from HAL 2000 using Tapatalk