Can Long-Term Vaping Cause Cancer? Are There Side Effects?

Does long-term vaping cause cancer? Are there side effects? Surely, no one is unaware that smoking can lead to cancer, which is why more and more people are switching to e-cigarettes. Since cigarettes are a state monopoly, many people are unfamiliar with e-cigarettes and want to try them but are unsure if there are side effects.

We need to understand that the harmful substances in cigarettes are tar, carbon monoxide, and other heavy metals. Among these, tar is the most harmful. Nicotine also has mild toxicity, but if the absorption is within normal limits, it is quickly expelled from the body and does not remain for long. Nicotine is primarily responsible for addiction. However, e-cigarettes do not contain tar, and nicotine salts are relatively milder than the nicotine in cigarettes, so the claim that long-term vaping causes cancer is unfounded.
Additionally, many people are concerned about the harm of secondhand smoke from e-cigarettes. This has always been a public concern. So, does e-cigarette vapor have "secondhand smoke" harm?

The answer is: no.

You cannot even get firsthand smoke from a vaporizer because the substance that comes out of the vaporizer is vapor, not smoke. This may sound surprising, but it is the truth. It is essential for everyone to understand the difference between smoke and vapor.

It is vapor, not smoke.

So, what is the difference between vapor and smoke?

Vapor does not contain the chemicals found in cigarette smoke. It is said that cigarette smoke contains over 4,000 different compounds, many of which are toxic and can damage cells. Many are carcinogenic. However, vapor is very different.

One reason vaping is safer than smoking is that there is no combustion involved—(although there was a time when vaporizers were in the hands of scientists who did not fully understand how to use them or the vaping experience). During smoking, many toxins and carcinogens are byproducts of the combustion process. Therefore, when there is no combustion, these substances are not released.

But this does not mean that vaping is completely safe. More accurately, vaping is sufficiently safe: there is no need to worry that smokers switching from cigarettes to e-cigarettes will have adverse effects, nor is there a need to be exposed to secondhand vapor.

Even if a small number of harmful components are detected in e-cigarette vapor, the levels of these harmful components are so low that they are almost negligible in terms of potential harm to the body. Some harmful components are released due to the heating of metal coils, and the media often sensationalizes this, sometimes even fabricating stories.

Research results that are out of context

For example, there are often erroneous reports stating that "research shows toxic heavy metals leak from e-cigarettes into the vapor." In a study titled "Metal Concentrations in E-Cigarette Liquids and Aerosol Samples: Contributions from Metal Coils," conducted by Johns Hopkins Bloomberg School of Public Health, researchers tested e-cigarette vaporizers borrowed from 56 daily vapers, analyzing the e-liquids, aerosols, and remaining e-liquids in the tanks, reporting that arsenic, chromium, manganese, nickel, and lead were at potentially unsafe levels. Is this really the case?
The study has significant flaws, leading prominent scientists and researchers to feel the need to respond.

After the publication of the aforementioned study, renowned anti-smoking expert Dr. Konstantinos Farsalinos, a researcher at the Onassis Cardiac Surgery Center in Athens and the University of Patras in Greece, received many inquiries regarding the metal content emissions from e-cigarettes. Farsalinos, who has been the chief researcher in e-cigarette laboratory and clinical studies since 2011, posted a response on his Facebook page: "For those asking about the latest research on metal content emissions from e-cigarettes, my response is: the authors of the study reported that the 'large' amounts of metals found in e-cigarette vapor were measured in micrograms per kilogram. In fact, they are at extremely low levels, to the point that in some cases (for chromium and lead levels), you would need to vape over 100 milliliters of e-liquid daily to exceed the FDA's daily intake limits for inhaled drugs."

Farsalinos pointed out that, unfortunately, this is yet another case of misinterpreted data and research results. "The authors of the study again confused themselves and everyone else by applying environmental safety limits related to each breath to vaping. However, humans breathe over 17,000 times a day, but only smoke 400-600 times a day."

Last November, public health experts stated that unfortunately, there are extremely many research reports in the field of e-cigarette research that report "strange" findings. He has repeatedly pointed out that researchers should be cautious and strive to find possible errors and apply results to relevant contextual research. However, those who publish inaccurate results and create media hype, leading to more inaccuracies, can be considered dangerous information dissemination.

In conclusion: the harmful substances in cigarettes are tar, carbon monoxide, and other heavy metals, with tar being the most harmful. E-cigarettes produce vapor by heating e-liquid, without tar and other harmful substances, so long-term vaping will not cause cancer. Additionally, e-cigarette vapor is generated by heating, not the smoke produced by burning cigarettes, so there is no secondhand smoke harm.