My father has COPD from over 50 years of smoking. I convinced him to switch to vaping and he's been using a Juul for a few years now. Awhile after the switch his primary care physician listened to his lungs and said they sounded a lot better. She said she because the science isn't in "I can't tell you to vape but I can tell you to keep doing what you're doing". Should non-smokers pick up vaping? Probably not. But in…
Yeah there's the interesting issue of popcorn lung, which comes from inhaling a certain chemical, diethyl. I don't think it's in juul.
Custards, a popular group of vape flavors, was the main source of it.
The catch?
Diacetyl is also a byproduct of cigarette smoking.
https://www.tandfonline.com/doi/abs/10.3109/10408444.2014.88...
The risk was not considered to be noteworthy among cigarette smokers and food workers who had higher exposure to the chemical diacetyl...
> Further, because smoking has not been shown to be a risk factor for bronchiolitis obliterans, our findings are inconsistent with claims that diacetyl and/or 2,3-pentanedione exposure are risk factors for this disease.
So basically... vaping causes popcorn lung = FUD.