Latest Authoritative Research: Smokers Switching To E-cigarettes Reduces Carcinogenic Levels in Their Bodies By 99%

A recent paper published by the international authoritative journal Nicotine&Tobacco Research suggests that after switching to e-cigarettes, smokers experience a significant decrease in the levels of multiple high-risk carcinogens in their bodies, with a maximum reduction of 99%.
The paper was published in Nicotine&Tobacco Research
The research is led by King's College London, a world-renowned institution that has produced 16 Nobel laureates and is particularly authoritative in the field of medicine. The study mainly compares the levels of tobacco specific nitrosamines (TSNA) in the bodies of smokers and e-cigarette users. This is the most lethal group of 69 carcinogens contained in cigarettes, including NNK directly related to lung cancer, NNN causing liver cancer and pancreatic cancer, NNAL inducing DNA mutation, and toxic NAB, NAT, etc.
The results showed that the TSNA content in the body of e-cigarette users was much lower than that of smokers. Specifically, in terms of data, the NNN level in the urine of e-cigarette users is 62% lower than that of smokers, the NAB is 87% lower, and the NAT is 94% lower. The most carcinogenic NNAL has the greatest reduction, at 96%.
Moreover, after switching to e-cigarettes, the TSNA content in smokers' bodies generally decreased by over 90%, and the NAT level even decreased by 99%. The study also pointed out that the longer smokers switch to electronic cigarettes, the more significant the harm reduction effect. Taking NNAL as an example, after switching to e-cigarettes for one week, the level of NNAL in urine decreased by 53%. After switching to e-cigarettes for four weeks, the decrease was as high as 84%. "This indicates that NNAL previously inhaled from cigarettes is constantly being cleared out of the smoker's body," the author wrote in the paper.
Cigarette combustion produces over 4000 chemical substances, and electronic cigarettes do not have the tobacco combustion process, so they can have a very significant harmful effect. The author emphasizes that the TSNA content in the body of e-cigarette users is basically lower than the detection line, similar to people who do not smoke anything, indicating that the toxic substances released by e-cigarettes are far less than those from cigarettes. Switching to e-cigarettes can effectively reduce the risk of disease for smokers.
Not only in the UK, but the latest domestic research also proves this. The recently released "Report on User Characteristics and Public Health Impact of Chinese e-cigarettes (2023)" pointed out that nearly 70% of smokers reported that their health condition improved after switching to e-cigarettes, and the degree of improvement in various symptoms was significant. More than 80% of people reported significant improvement in cough and sore throat symptoms.
"Cigarettes are directly associated with about 15 types of cancer. We have confirmed the significant effect of e-cigarettes in reducing TSNA levels, thus supporting smokers to switch to less harmful e-cigarettes," the authors wrote in their paper.