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A pilot study by a team of researchers from the Desert Research Institute (DRI) and the University of Nevada, Reno shows that significant amounts of cancer-causing chemicals such as formaldehyde are absorbed by the respiratory tract during a typical vaping session.
Dangerous levels of aldehydes are formed during the chemical breakdown of flavored liquids in e-cigarettes and emitted in e-cigarette vapors. In this study, researchers estimated e-cigarette users’ exposure to these hazardous chemicals by analyzing the breath of twelve users before and after vaping sessions.
They determined how much the concentration of aldehydes in the breath increased. Researchers then subtracted the concentration of chemicals in exhaled breath from the amount found in the vapors that come directly from the e-cigarette.
They discovered that the average concentration of aldehydes in the breath after vaping sessions was about ten and a half times higher than before vaping and found the concentration of chemicals like formaldehyde in the breath after vaping was hundreds of times lower than what is found in the direct e-cigarette vapors, which suggests that a significant amount is being retained in the user’s respiratory tract.
The research team ensured that the test conditions of the study mirrored real-life vaping sessions as much as possible. Most participants used their own e-cigarette devices during the study, used e-liquid flavors that were familiar to them, and inhaled for the amount of time that they ordinarily would, which allowed the research team to understand how e-cigarettes are typically used by regular users.
Because they tested “normal” during vaping experiences, researchers confirmed that the high concentrations of aldehydes found in other studies aren’t limited to laboratory conditions.