Episode Summary
Executive Summary: The episode investigates the 2019 outbreak of vaping-related lung injury, using Eddie’s near-fatal case to explore likely causes. Evidence points most strongly to black-market THC vapes containing vitamin E acetate, pesticides, and possibly other contaminants or flavor chemicals. The show concludes that while vape risks are real, especially in illicit products, regulated vapes still appear safer than cigarettes for smokers trying to quit.
Main Topics: Eddie’s illness as a case study (Priority: 5/5): A healthy 17-year-old developed severe respiratory failure after vaping, illustrating how quickly the outbreak could strike and how frightening it was for families and clinicians. Clinical pattern of vaping lung injury (Priority: 5/5): Doctors saw inflamed, stiff lungs with hazy chest scans, negative infection tests, and signs of chemical injury rather than pneumonia or a virus. Black-market THC vapes and vitamin E acetate (Priority: 5/5): Public health investigators found many sick patients had used illicit THC cartridges, especially Dank Vapes, and many of those products contained vitamin E acetate. Pesticides and other contaminants (Priority: 4/5): Testing of illegal cartridges found multiple pesticides, some of which are known or suspected to become toxic when inhaled or heated, suggesting more than one possible cause. Flavor chemicals and inhalation risk (Priority: 4/5): Lab studies showed some flavorings, especially cinnamon and vanilla-related chemicals, can impair cilia and immune cells, though these were mostly petri-dish studies and not definitive causes of the outbreak. Why the outbreak emerged now (Priority: 4/5): The episode argues the scale may reflect recent changes in the black market, including new additives, higher concentrations, or multiple hazards combined, plus a lack of premarket safety testing. Vaping versus smoking (Priority: 4/5): Despite this outbreak, experts say regulated vaping is still likely safer than cigarettes and can help some smokers quit, though patches and medications should usually be tried first.
Key Arguments: Eddie’s case was not isolated; similar severe lung injuries appeared nationwide, indicating a broader outbreak rather than a single patient event. Doctors found inflamed lungs, hazy scans, and chemical-burn-like tissue damage, which pointed away from infection and toward inhaled toxins. A strong epidemiological clue was that most early cases involved illicit THC vapes, especially black-market cartridges like Dank Vapes. Vitamin E acetate was repeatedly found in many illicit THC products and may have been added as a cheap thickener or cutting agent. However, vitamin E acetate is not yet proven guilty because there are no definitive human inhalation studies showing it alone causes the injury. Pesticides were found in many black-market cartridges, and some may become dangerous compounds when heated, making them plausible co-contributors. Flavoring chemicals can damage lung defenses in lab experiments, but current evidence is insufficient to say they explain the outbreak by themselves. The outbreak may reflect a combination of hazards rather than one single chemical, especially in unregulated products. The risk appears concentrated in illegal or adulterated products, while regulated vaping remains, in comparative terms, less harmful than combustible cigarettes. For smokers, the safer comparison remains vaping versus smoking, not vaping versus no nicotine use; cessation aids like patches and medication should be considered first.
Data Points: U.S. deaths linked to vaping outbreak: 34 - Deaths reported in the episode during the outbreak. U.S. injuries linked to vaping outbreak: more than 1,600 - Number of diagnosed injuries from vaping at the time of reporting. Investigated cases by CDC: about 530 - CDC case investigation mentioned during the outbreak. States with deaths: 21 - Deaths occurred across 21 states. People who vape in the U.S.: more than 10 million - Estimated number of U.S. vapers cited in the episode. Vitamin E acetate share in tested illegal cards: about three quarters - CannaSafe testing found roughly 75% of illegal vape cards contained vitamin E acetate. Vitamin E acetate in one tested card: 30% - A first tested cartridge had 30% vitamin E acetate by volume/measure reported in the lab. Highest vitamin E acetate level mentioned: 88% - One lab reportedly found a cartridge with 88% vitamin E acetate. Pesticides found in illegal vapes: 100% - All tested black-market vapes in Inie Abong Afia’s sample contained pesticides. Average number of pesticides per illegal vape: at least 5 - Average number of distinct pesticides detected in one cartridge sample. Age of Eddie: 17 - The teen patient at the center of the opening story. Time of Eddie’s emergency wake-up: 2:30 a.m. - He woke his mother after repeated vomiting and severe pain.
Pivotal Quotes: "I don't think it's caused by one thing. I don't think it's one chemical that's causing all of this. I think it's a combination." — Ilona Jaspers: On the likely cause of the outbreak after reviewing available evidence. "The lung is really not well-equipped to detoxify." — Ilona Jaspers: Explaining why inhaling chemicals can be more dangerous than eating them. "Smoking is incredibly and uniquely deadly for something that's legal." — Jamie Hartman-Boyce: On why vaping should still be compared against cigarette smoking, not treated as equally harmful.
Implications: Listeners should avoid black-market THC vapes and pause vaping if possible while the outbreak is investigated. For smokers, regulated vaping may still be a harm-reduction tool, but it is not risk-free and should not replace proven quit aids without reason.
About Science Vs
There are a lot of fads, blogs and strong opinions, but then there’s SCIENCE. Science Vs is the show from Spotify Studios that finds out what’s fact, what’s not, and what’s somewhere in between. We do the hard work of sifting through all the science so you don't have to and cover everything from 5G and ADHD, to Fluoride and Fasting Diets.