Quoting directly from Reddit [1]: >Oh boy, time to crosspost for information's sake. >Even diactyl containing e-juice still contains 100x less diacetyl than t

Quoting directly from Reddit [1]: >Oh boy, time to crosspost for information's sake. >Even diactyl containing e-juice still contains 100x less diacetyl than traditional cigarettes. [Citation: http://onlinelibrary.wiley.com/doi/10.1002/tox.20153/pdf http://onlinelibrary.wiley.com/doi/10.1002/tox.20153/pdf ] And no smoker to date has ever gotten "Popcorn Lung" (Named because it occurs years after dumping pure uncut diactyl into vats and bins when making cheapo microwave popcorn in the factories.) >And despite all that- It's still largely the other factors and chemicals and tar and actual combustion that damages your lungs when smoking is involved. Not diacetyl specifically. >Even 100x the amount of diacetyl as e-juice is apparently not enough to cause the "Popcorn Lung" issue related to the compound specifically. So why would 100x less than the amount that does not cause it suddenly start to cause it? Not that it's 100 percent safe (As mentioned by a replier as well- So I have appended my post some for accuracy and fairness.) Just that it's not the immediate or unavoidable threat it's being presented as. >And in the span of 7+ years even in the heaviest vape users no one has (yet, mind. For the sake of fairness and caution.) reported any major health issues tied to vaping or the compounds contained in e-juice. If the 75ml a day heavy diactyl juice user doesn't get popcorn lung then I highly doubt popcorn lung is a problem to watch for regarding it. >Also there are many many e-juices available without diactyl. So even if it was an issue you can actively avoid it. And most manufacturers have discontinued it's use or clearely state if their juices are diacetyl free so the risk factors that are purely tied to diacetyl are avoidable and preventable. >As far as being paranoid about what's put in it- This is purely my opinion but, I think that is razorblades in your kid's halloween candy or "Shadey people handing out drugs for free/Lacing your kid's flintstones vitamins with PCP" levels of unfounded overconcern. >Caution is important- But so is research and fact checking. >Edit: To append this to- I am not defending the use or previous use of the substance, merely dispelling the immediate "Popcorn Lung" panic around it. I personally don't use e-juice containing it for the sake of risk reduction in general as I like to limit as many potential factors as possible in general. And there are hundreds- if not thousands of brands and types which do not contain diacetyl to choose from which I would recommend. >I am also not claiming vaping is 100 percent safe- Just that this instance is an avoidable factor and has been for a while. >Personal safety and active research should always be practiced in all facets of life. [1] https://np.reddit.com/r/science/comments/3vxbzo/chemical_flavorings_found_in_ecigarettes_linked/cxrq6ro https://np.reddit.com/r/science/comments/3vxbzo/chemical_fla... Edit: For the record, that is not my Reddit post. I found it to be very informative, so I thought I'd share it with the HN community. Please respect Reddit's no brigading policy - for both upvoting and downvoting posts.