Antwort auf den Beitrag "Re:Studie: Schon einmaliges Dampfen schädigt Blutgefäße" posten:
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Nachricht:	>Und das selbst dann, wenn man kein Nikotin verwendet: > >[i:"Researchers at the University of Pennsylvania’s Perelman School of Medicine simplified the question. They removed nicotine and flavorings and just looked at what inhaling that basic vapor does to a person’s blood vessels. > >Using an MRI, the researchers examined the veins and arteries of 31 people before and after they took a few puffs of an e-cigarette. Their e-cigarettes contained only vape juice, a mixture consisting primarily of water and either glycerol or propylene glycol, which keep everything dissolved inside the cartridge. The test subjects—who were all between the ages of 18 and 35—were nonsmokers and first-time vapers. But after taking 16 three-second puffs, the participants had worse circulation, stiffer arteries, and less oxygen in their blood. “The results of our study defeat the notion that e-cigarette vaping is harmless,” says Felix Wehrli, the study’s principal investigator."] > >Und weiter: > >[i:"Although glycerol and propylene glycol are considered safe to eat, they may not be safe to inhale. Wehrli’s study shows that when the chemicals are heated and inhaled, they end up passing through the lungs and into the arteries and veins that make up our vascular system. Once there, they irritate the epithelium, a thin layer of cells that lines blood vessels and helps regulate blood flow, blood clotting, and immune responses. The inflamed epithelium then alters how arteries expand and contract. “We did expect an effect, but we never thought the effect was as big as what we found,” notes Wehrli. “It’s not just a little change we detect—it’s a major effect.”"] > >[https://www.wired.com/story/vaping-may-harm-your-blood-flow-even-without-nicotine/] > >Direktlink zur Studie: >[https://pubs.rsna.org/doi/10.1148/radiol.2019190562]
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