'Little Difference' Between Smoking & Vaping

E-cigarettes may be just as risky as tobacco smoking in terms of their potential to cause harm in the lungs, researchers have warned.

Experts at Queen's University Belfast found "little difference" between cigarette smoke and e-cigarette vapour and the changes they cause to bacteria in the lungs.

The study was carried out as rates of tobacco smoking decrease while the number turning to vaping simultaneously increases.

Vaping has been suggested as a safer alternative to smoking but, according to local experts, there is limited evidence to support this and there are major concerns around its safety.

The study compared the effect of exposure to cigarette smoke extract and e-cigarette vapour on levels of inflammation and the virulence of bacteria commonly associated with lung disease.

The research team found that exposure to both cigarette smoke extract and e-cigarette vapour caused an increase in the potential of bacteria to cause harm in the lungs, in a way which could lead to diseases such as COPD and asthma.
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Vapers are not always ex-smokers, and there has been an increase of vaping among young people who have never smoked before. According to the World Health Organization, there has been a small but steady decrease in the estimated number of smokers globally, to just over one billion. Whereas the number of vapers has been increasing rapidly - from about seven million in 2011 to 41 million in 2018.

The researchers also found that changes in bacteria exposed to e-cigarette vapour were similar, and in some cases exceeded those observed following bacterial exposure to cigarette smoke, suggesting that there is little difference between cigarette smoke and e-cigarette vapour.

Dr Deirdre Gilpin, researcher and lecturer from the School of Pharmacy at Queen's University and lead author of the research, said: "This study shows us that vaping may carry the same risk as cigarette smoke in increasing the susceptibility to bacterial infection.

"Bacteria have long been associated with the development of lung diseases such as bronchitis and pneumonia where smoking plays a role. Our study is the first of its kind which aimed to compare the effect of cigarette smoke and e-cigarette vapour on key lung bacteria."

Professor Jose Bengoechea, Director of the Wellcome-Wolfson Institute for Experimental Medicine and co-author of the study said the research will have phenomenal public health implications.

He commented: "Worryingly, e-cigarette vapour as well as cigarette smoke increase the harmful potential of already dangerous infections, in addition to the well-known detrimental effect on lung function. At the very least this work should open a frank debate on vaping safety."


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