Flow-mediate dilation scores have been closely linked to the long-term risk of heart attacks and stroke. The results of the study show risk scores as follows:
- Healthy nonsmokers had a score of 7.7%
- Smokers had a score of 5.5%
- Those who switched to nicotine e-cigarettes for a month had a score of 6.7%
Researchers stressed that more research is needed, and the study does not conclude that vaping is safe. The AJC previously reported that health authorities have suggested Americans refrain from e-cigarettes until more is known about their link to respiratory illnesses.