Medicine

Nicotine In E-Cigarette Vapors May Cause Cancer, Mouse Study Suggests

Nicotine In E-Cigarette Vapors May Cause Cancer, Mouse Study Suggests

That might be even harder to do for e-cigarettes, since many users are either former or current smokers, and there'd be no easy way to tell where the cancer risk from smoking ends and the cancer risk from vaping begins.

In the tests, mice breathing the e-cigarette vapour showed greater damage to their DNA in the heart, lungs and bladder, as well as being more likely to develop tumours compared to the control group of mice breathing filtered air. Participants tended to go longer in the morning before having a vape, they reduced to e-liquids with less nicotine over time and some vaped only zero nicotine e-liquids.

"It is therefore possible that E-cigarette smoke may contribute to lung and bladder cancer, as well as heart disease, in humans", the researchers wrote in their study, which was published in the journal PNAS on January 29.

This is avoided in e-cigarettes, with nicotine delivered through aerosols without burning tobacco.

Vaping causes DNA mutations which lead to cancer, a new study warns. In 2016, the U.S. Surgeon General Vivek Murthy called e-cigarette use among American youth a "major public health concern", citing a 900 percent growth rate among high school students.

About one in 20 people in the United Kingdom has adopted a vaping habit as a markedly safer alternative to smoking tobacco.

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Battery-powered e-cigs have been widely promoted as a safer alternative to cigarettes because they do not burn tobacco - but scientists now warn the nicotine in them is far from harmless. Natural DNA fix mechanisms were also suppressed in the mice exposed to the smoke. Meanwhile cultured human cells reacted in a similar manner when exposed to nicotine and its derivatives.

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.

A leading tobacco company, Philip Morris, had recently wanted to market a new e-cigarette device, IQOS, as a healthier option but the Food and Drug Administration rejected that idea a few days ago.

This latest study is not, by itself, conclusive. A report released by the National Academies of Sciences, Engineering, and Medicine earlier this month revealed that vaping is less harmful than smoking conventional cigarettes. "It also leads to addiction to nicotine, which then leads them to try and experiment with other tobacco products - smoking included".

"Research in people has shown that those who make a complete switch from smoking tobacco to e-cigarettes can significantly reduce their exposure to key harmful chemicals in tobacco smoke".

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".