Vape-related lung illnesses mostly affecting THC users, CDC confirms

A lot of the offending vapes reportedly came from black market or other "informal" sources outside of legal supply lines.
 By 
Adam Rosenberg
 on 
Vape-related lung illnesses mostly affecting THC users, CDC confirms
THC vapes vaporizer catridges lung illness  EVALI CDC Centers for Disease Control Credit: 420Mediaco / shutterstock

The mysterious lung illness that's afflicted more than 1,600 vape users and claimed 34 lives (as of Oct. 22) has now been shown to disproportionate affect THC users.

That was one of the key takeaways after a Friday briefing from the Centers for Disease Control. Dr. Anne Schuchat, the agency's principle deputy director, further confirmed that THC vapes obtained outside of legal supply lines – including those on the black market and those obtained from friends or family – seem to be the biggest offender.

"The vast majority of patients with EVALI" – that's the acronym the CDC is using for this illness – "including those who died from their lung injury, had a history of use of e-cigarette, or vaping, products that contained THC," Schuchat said.


You May Also Like

In strictly numerical terms: of the 860 patients the CDC has data on, 85 percent have a history of THC vape use. Meanwhile, only 10 percent "reported exclusive use of nicotine containing products."

Schuchat also cited a Tuesday report which focused specifically on cases in Utah. The report found that "most" of those afflicted had obtained their THC vapes "from informal sources or online," rather than through legal dispensaries. This finding falls in line with data already gathered in other states, she said.

"The Utah data are fairly consistent with the pattern of product use described in the Illinois and Wisconsin investigations where about 89 percent of patients reported getting THC-containing products from friends, family, illicit dealers, or off the street," Schuchat said.

For all the work that's been done, however, some big questions remain. The CDC hasn't yet identified a single specific "compound, substance, product, or brand" as the cause of these injuries. As a result, the agency's recommendations regarding e-cigarette use is unchanged: "[T]he only way to be sure that you are not at risk is to consider refraining from use of all e-cigarette, or vaping, products while our investigation continues."

Still, the new findings paint a clearer picture of what may be going on here. There's been a lot of fearful talk around vapes as reports of lung injuries have spiked, which isn't great news for a young tech product that helps curb the use of more harmful cigarettes. In fact, cigarette use is reportedly on the rise again. It's also been a setback for the still-young industry around legal cannabis use.

The latest findings don't definitively confirm that black market THC vapes are the primary cause of these lung injuries, but it's clear the data is beginning to point in that direction.

Topics Health

Mashable Image
Adam Rosenberg

Adam Rosenberg is a Senior Games Reporter for Mashable, where he plays all the games. Every single one. From AAA blockbusters to indie darlings to mobile favorites and browser-based oddities, he consumes as much as he can, whenever he can.Adam brings more than a decade of experience working in the space to the Mashable Games team. He previously headed up all games coverage at Digital Trends, and prior to that was a long-time, full-time freelancer, writing for a diverse lineup of outlets that includes Rolling Stone, MTV, G4, Joystiq, IGN, Official Xbox Magazine, EGM, 1UP, UGO and others.Born and raised in the beautiful suburbs of New York, Adam has spent his life in and around the city. He's a New York University graduate with a double major in Journalism and Cinema Studios. He's also a certified audio engineer. Currently, Adam resides in Crown Heights with his dog and his partner's two cats. He's a lover of fine food, adorable animals, video games, all things geeky and shiny gadgets.

Mashable Potato

Recommended For You
Markiplier confirms 'Iron Lung' movie's theatrical run extended
Markiplier speaks into a microphone.

Anthropic used mostly AI to build Claude Cowork tool
Anthropic logo displayed on a phone screen and AI sign displayed on a screen

Bitcoin price climbs Friday, but can it continue? Experts are skeptical.
Bitcoin logo on price chart

Is U.S. TikTok censoring its users?
A collage shows a smarphone with the TikTok logo on its screen, a Palestinian flag, and a screenshot of a TikTok DM with the word 'Epstein' not delivered.

3 AdultFriendFinder features exclusive to paid users
By Jack Dawes
Plus signs coming out of treasure chest

Trending on Mashable
NYT Connections hints today: Clues, answers for April 3, 2026
Connections game on a smartphone

Wordle today: Answer, hints for April 3, 2026
Wordle game on a smartphone

What's new to streaming this week? (April 3, 2026)
A composite of images from film and TV streaming this week.

NYT Strands hints, answers for April 3, 2026
A game being played on a smartphone.

The biggest stories of the day delivered to your inbox.
These newsletters may contain advertising, deals, or affiliate links. By clicking Subscribe, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up. See you at your inbox!