what ever the result of the long term studies i am sure any health concerns that may be associated with vaping
will pale in comparison to smoking.one of my concerns is VG use among diabetics.i have known cooks who had to quit cooking
because of absorption of oil from the fryers elevated there cholesterol.
i myself never had any purging of the lungs,probably because i coughed and hacked all day.
that disappeared completely after one week. now when i cough(very,very rarely)my wife asks me
if i'm coming down with something.from what i have read in the studies out so far is vaping is so much
safer than smoking its a no brainer.i believe any adverse affects found in future studies will be minimal
and work arounds will be developed so fast it will make the folks at the FDA's heads spin.

regards
mike