You are demanding some FACT that proves a negative- that there will never be any adverse consequences found. That is not a fact, that is a religion and philosophy.
First off VNeil, yes I am fully aware of the stated facts......... But you are forgetting all about the main theme of my prior post...... I was not disputing any facts, merely adding a few facts, like I am about to do again ....... The fact of the matter is that just because something is proven to be not harmful in the SHORT term does not mean it is not harmful in the LONG term especially if people overdo it and at a chronic pace.
How many times do all of us hear about medications that were developed by bright people and studied by bright people for at least 15 years and thought to be totally safe if taken as directed only to find out later that those "safe" medications cause lots of death and injury that did not show up until used for some time? It's real simple, just because they study the heck out of something and assume that it is harmless does not in fact mean that turns out to be the case.
Common sense is also a (fact) component of human reasoning, but unfortunately lots of the scientifically minded and analytical people (myself) often seem void or lacking in this area. I have struggled for many years to gain in common sense and this is probably one reason why I value it so highly...... I would trade all of my knowledge of electronics, engineering, and computer programming languages that I have acquired in various colleges, any day of the week for some good ole fashioned common sense (which I sadly lack, ask my wife lol). My point is that using common sense and anecdotal comparisons, it is not difficult to conclude that inhaling mass amounts of PG/VG is none too wise of a thing to be doing (compared to not doing it)........ I do it because I am just plain weird and have an addictive personality. Why the rest of you folks do it is your business. It seems that some of the folks on this thread are using common sense to conclude that LONG TERMED usage may not be none too swift on the body. Our lungs are made to breath in oxygen and through the process of osmosis transfer that oxygen to the blood (fact). Notice that I did not state that our lungs are made to breath in PG/VG mist.
Edit: Sorry for the delay. I had to make a trip up to my Mother-in-law's house arrrgh. Let's see where I was at..... Oh yes, common sense... Well, that is another subject all in it's own but let's just say that I think it is an important aspect in all human endeavors (including vaping) along with moderation.
Once again folks, I am NOT on the side of any of the "opinions" here in regards to LONG TERM usage of PG, or any other component. I know what the facts are that VNeil has pointed out. But I am also fully aware that often scientists claim that something is safe only to find out after many lawsuits and years later that it was very harmful.
So, I am not on the side of those who think it "may" be harmful and I am not on the side of those who assume that it is not harmful. However, I do tend to lean towards the side of caution when it comes to sticking things into portions of my body where it doesn't belong. I did that for almost 40 years smoking but yet I still did it. Now that's what I call weird..... Of course the technical classification would be "addictive personality".
I am also aware that there are certain beneficial components to vaping such as anti viral properties of PG and the like.... But, Like I said before, long termed usage and too much of most anything can be a bad thing instead of a good thing and this includes anti viral substances.
Now, obviously and through the use of common sense (rare for me) I am "assuming" that vaping is healthier than tobacco or I would not be doing it. Even though the current facts suggest that it is fairly safe, I have heard all of this before with other substances and things were discovered later on to be totally different. And by the way VNeil, you seem to have a mania about ANTZ (no offense intended)........... Let me just say that I never even heard of e-cigs until I discovered them and started vaping them so I don't see how you would think that I could be brainwashed by ANTZ. Like yourself, and as we have discussed before, I hate big brother, big pharma, and BT just as much as you do.