This photo illustration shows a man exhaling smoke from an electronic cigarette in Washington, DC on September 12, 2019. - Lung biopsies from 17 people affected by a US outbreak of severe pulmonary disease linked to vaping have revealed the injuries are consistent with exposure to noxious chemical fumes, scientists reported on October 2, 2019.
The results of the research, published in the American Journal of Preventive Medicine, are unrelated to the recent outbreak of an acute lung disease that has killed more than 50 people and has been linked to a substance commonly added to vaping products containing THC, the psychoactive component of cannabis.
They found that current and former e-cigarette users were 1.3 times more likely to develop chronic lung disease, while tobacco smokers increased their risk by a factor of 2.6.“What we found is that for e-cigarette users, the odds of developing lung disease increased by about a third, even after controlling for their tobacco use and their clinical and demographic information,” said senior author Stanton Glantz, a UCSF professor of medicine.
The paper did not offer a new biological explanation for how vaping causes such harm, but cited earlier physiological studies in both animals and humans that have found that e-cigarettes suppress the immune system and increase the levels of stress-related proteins in the lung.
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