While many people may know that electronic cigarettes are not as harmful as tobacco cigarettes, not many are aware of the specific hazards that they may still face if they use e-cigs. A study has shed some light on the potential harm that vapers may be exposed to as they use e-liquids that contain nicotine. The researchers monitored arterial stiffness in the study subjects who used e-cigarettes that contained nicotine and participants whose e-juice didn’t have any nicotine in it. It was discovered that those whose e-liquid had nicotine exhibited arterial stiffness while those without nicotine didn’t show any stiffness in their arteries. The stiffness was transient. However, concern was raised that prolonged vaping could trigger permanent blood vessel stiffness in the way that smoking tobacco cigarettes did. Further research is needed to verify that fear. In the meantime, it is advisable to avoid excesses, such as “dripping” that could worsen any possible adverse effects of vaping.