A vaping study has been undertaken in the USA where researchers have exposed mice to flavoured e-cigarette vapour and measured the diameter of their arteries before and after. The researchers at West Virginia University then came to the following conclusion;

“These data indicate that e-cigs should not be considered safe and that they induce significant deleterious effects.”

The claim is based on the following findings:

– After five minutes of vape exposure, mice’s arteries narrow by 30% in an hour
– Their blood vessels also become less able to dilate, increasing blood pressure
– Long-term vaping more than doubles the artery stiffness of exposed mice

Long term tests and short term tests were carried out. The long term test consisted of 20 hours of exposure to e-cigarette vapour a week over an 8 month period and the short term test was defined as five minutes of exposure.


This vaping study included no data relating to the effect of tobacco cigarettes on the animals and therefore there is no comparison between smoking and vaping. As e-cigarettes are a tobacco harm reduction tool the effects should surely be compared with the effects of tobacco if any sort of constructive evidence is to come out of it. This point is exasperated by the fact that a particular article is titled ‘E-cigarettes are as dangerous as smoking’ when in fact there is no evidence behind this claim.

Numerous comprehensive studies have been undertaken by leading public health organisations with one of the key findings from Public Health England stating that ‘e-cigarettes are at least 95% safer than smoking’.

With health policies in the UK increasingly advocating e-cigarettes with the intention of reducing the harm caused by tobacco it is dubious research and results like the aforementioned that can damage these initiatives, leaving smokers thinking ‘what is the point?’

Related article: Beyond the Headlines