How unsafe are e-cigarettes compared to smoking? Landmark study compares them

Jeannette Daniel
January 31, 2018

The mice were exposed to high levels of e-cigarette smoke and the effects may be very different in people who inhale nicotine from vaping, critics caution.

"We have made real progress, but there is still more work to do".

Smoke from e-cigarettes damages DNA and can increase the risk of cancer and heart disease, scientists have warned.

However, in studies on lab mice, those exposed to e-cigarette smoke "had higher levels of DNA damage in the heart, lungs, and bladder, compared with control mice exposed to filtered air", it said.

The researchers stressed that the study disputes the misconception of many smokers and doctors that smoking only a few cigarettes causes little or no risk. By 2015, 16 per cent of American high school students said they used e-cigarettes, making it the most popular nicotine product among kids. NRT has always been known as a much safer alternative to smoking'.

The research project has announced that its next project is a long-term experiment that looks at the development of tumours in mice exposed to e-cigarette vapour. It also retarded DNA fix functions and proteins in the lungs.

Vaping may raise the risk of cancer because it leads to DNA damage, even though it contains fewer carcinogens than tobacco smoke, a USA study has found.

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Ted Cruz. "Doing so is inconsistent with the promises we made to the men and women who elected us". Anti-immigration activists also assailed the plan, though for the opposite reason.


The researchers said that if the findings will be confirmed in future studies, it could mean that e-cigarettes, always been considered to be the safer alternative to traditional cigarette and tobacco products, also carry cancer risk through the nicotine that they deliver.

A comprehensive review of the scientific literature, released earlier this month by the US National Academies of Science, found that vaping is likely less harmful than cigarettes, but may lead to addiction in young people. The findings of the study by itself are neither conclusive.

Evidence points to the "almost unambiguous" conclusion that nicotine can convert to a carcinogen once inside the human body, said study author Moon-shong Tang, a professor of environmental medicine and pathology at NYU School of Medicine.

While tobacco smoke contains a host of risky chemicals, e-cig liquid consists only of nicotine and relatively harmless solvents.

Ash Scotland chief executive Sheila Duffy added: "The tobacco industry uses every trick in the book to snare new young people into becoming smokers, with the result that 36 children start smoking every day in Scotland".

Last week a major United States report into the health effects of e-cigarettes found that vaping might be useful to help people quit smoking.

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