Researchers note that the signs of harm were similar but lesser compared to those induced by smoking common cigarettes. They compared the effects of smoking and vaping with the same nicotine content on the blood vessels in volunteers. 40 healthy men and women, 20 smokers and 20 nonsmokers, participated in the study.
“Our study demonstrates that both cigarettes and e-cigarettes have unfavourable effects on markers of oxidative stress and FMD after a single use, although e-cigarettes appeared to have lesser impact”, study says. “Future studies are warranted to clarify the chronic vascular effects of E-cigarette smoking.”
More details here.