Vaping is safer than cigarettes

Vaping is safer than cigarettes

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.

Researchers acknowledged that carcinogens found in body fluids of e-cigarette users are 97 percent lower than in cigarette smokers but noted this is still "significantly higher than in nonsmokers". Karteek Kadimisetty, a chemist at the university, said, "From the results of our study, we can conclude that e-cigarettes have as much potential to cause DNA damage as unfiltered regular cigarettes". They then observed that when the cells treated with nicotine were subsequently exposed to environmental causes of mutation, such as UV rays, the nicotine-exposed cells had between two and four times more spontaneous mutations, suggesting that the nicotine predisposed cells to mutation from other sources. "I never expected the DNA damage from e-cigarettes to be equal to tobacco cigarettes", Kadimisetty said. Also, since many e-cigarette users are either former or current smokers, it can be hard to determine whether the cancer risk comes from smoking or vaping.

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.

However, not all animal research produces similar results in humans. "Based on these results I can not conclude that E-cig smoke is safer than tobacco smoke in terms of cancer susceptibility of smokers".

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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.

E-cigarette smoke delivers nicotine through aerosols without burning tobacco.

All in all, a rather unclear picture emerges.

Earlier this month, a report from the National Academies of Sciences, Engineering and Medicine that reviewed the findings of 800 studies found e-cigarettes may lead young people to smoke conventional tobacco, but they also appear to help adults quit smoking. Whether or not Tang's research into nicotine by-products changes that conclusion remains to be seen.

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