In a study recently published in the journal Respiratory Research, University of Pittsburgh researchers found that mint-flavored e-cigarette liquids generate more toxic vapor particles, leading to reduced lung functionality in users. This conclusion was reached by using a custom-made robotic syst
Research from the University of Pittsburgh reveals that adding mint flavor to e-cigarette liquids leads to more vapor particles and is linked to worse lung function in users. A new “vaping robot” that mimics human breathing and vaping behavior was used in the study, indicating that menthol vapers exhibited shallower breaths and poorer lung function compared to non-menthol smokers, even after adjusting for factors like age, gender, race, and use of other substances.
“Many people, especially youth, erroneously assume that vaping is safe, but even nicotine-free vaping mixtures contain many compounds that can potentially damage the lungs,” said senior author Kambez H. Benam, D.Phil., associate professor in the Division of Pulmonary, Allergy, and Critical Care Medicine at the University of Pittsburgh School of Medicine. “Just because something is safe to consume as food does not mean that it’s safe to inhale.
Traditional approaches have other limitations as well. Mice and rats, animals primarily used to test aerosolized products’ safety and biological impact, have very different anatomy of their nasal passages compared to humans, which prevents them from taking an active breath through the mouth akin to taking a cigarette puff.
In their previous research, Benam and his team found that vitamin E acetate, a common additive in cannabinoid-containing e-cigarette liquids, generates more toxic small particles that can travel deep inside the lung and wedge themselves into the narrowest airways and lining of the walls of the trachea and bronchus.
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