Researchers at the Mayo Clinic have all but ruled out vitamin E oil and other thickeners as the possible culprit in a wave of vaping-related illnesses and deaths, deepening the mystery of what might be at fault.
Instead, the clinic pathology team reported in the New England Journal of Medicine on Wednesday that the lung tissue they examined suggests the damage was more likely caused by inhaling a caustic chemical fume.
“The damage is essentially akin to a chemical burn,” said surgical pathologist Dr. Brandon Larsen at the Mayo Clinic in Scottsdale, Ariz., who led the research team. “It looks like a toxic-fume exposure, like those that occurred in World War I with mustard gas or in an industrial setting with exposure to fumes from a chemical spill.”
In the new study Wednesday, Dr. Larsen and his colleagues examined lung-biopsy tissue from 17 patients at hospitals around the country, all of whom had been diagnosed with vaping-associated lung injuries. Almost three-quarters of them had vaped using cartridges containing marijuana or cannabis oils, the pathologists said. Two of them died.
But the Mayo Clinic’s lung-tissue samples, the first to be examined directly under a microscope, showed no sign of oils. “We have not seen any evidence of that in any of our cases,” Dr. Larsen said.
I attached the article as a PDF in case people can’t get through the paywall.
I always suspected it wasn’t vit E acteate. And now it looks like there is proof it’s not vit E acetate. So many people blaming it before there had any proof to do so. Leafly should be ashamed by blaming vit E acteate before they had any proof.
Here’s the full Mayo Clinic report: