Scientists at the University of Rochester Medical Center exposed immune cells called monocytes to a series of different chemicals used to flavor e-juices to see what effect they would have on disease-fighting cells in our bodies. Many of the chemicals used in the study produce e-juices with vanilla, cinnamon, buttery, or creamy flavors. Monocytes are crucial to our immune response because they travel throughout our circulatory system to kill any foreign invaders. These chemical flavorings were found to damage monocytes or even kill them. When chemical flavors were mixed, the results were even more damaging.
More long-term studies are needed to determine how these chemicals could affect our immune systems. Could it make users more likely to get sick? Or could it make their immune systems so weak they wouldn’t be able to fight off common infections like the cold? There is still so much we don’t know about electronic devices.

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