Recent research suggests which of the following statements about nicotine-free electronic cigarettes to be false?

Vaping nicotine-free electronic cigarettes produces transient changes in blood vessels similar to those seen in early atherosclerosis
Vaping nicotine-free electronic cigarettes causes a transient increase in serum markers of inflammation (C-reactive protein) and oxidative stress
Vaping nicotine-free electronic cigarettes could lead to chronic vascular endothelial dysfunction
Vaping nicotine-free electronic cigarettes does not produce any harmful changes in pulmonary vasculature

Congratulations to the November 2019 Winner!

M.R., Nurse Practitioner from WA