Frequently Asked Questions About the Risks of E-Cigarettes

There are many questions regarding the risks of e-cigarettes, and various users have raised concerns about their dangers, but the answers vary. Therefore, today, the Heat-not-Burn Information Network has compiled a FAQ on the risks of e-cigarettes, hoping to be of help to everyone.

FAQ on the Risks of E-Cigarettes

Q: E-cigarettes contain nicotine; why are their risks lower than those of cigarettes?

A: Modern medical evidence shows that the serious consequences of smoking, such as lung cancer, emphysema, and cardiovascular diseases, primarily come from tar, not nicotine. A report from Public Health England (PHE) states that the risks of tar-free e-cigarettes are at least 95% lower than those of cigarettes, while the nicotine content in both is actually comparable.

Q: Is nicotine not harmful?

A: Injecting nicotine is indeed highly toxic, but inhaling nicotine-containing vapor is completely different from intravenous injection. Studies show that only 3% of the nicotine is absorbed by the lungs when smoking, and it is metabolized and expelled from the body.

Q: I've heard that nicotine has adverse effects on cardiovascular health and can affect brain development?

A: As a stimulant, nicotine stimulates peripheral blood vessels to constrict, leading to an increased heart rate, and it is certainly not harmless. However, any stimulant carries similar health risks, such as caffeine. Regular consumption of caffeinated coffee or tea can have a comparable impact on cardiovascular health as nicotine.

Q: E-cigarettes also expose users to formaldehyde, making them more carcinogenic than regular cigarettes?

A: This claim is based on experiments conducted under dry burning conditions, where the heating element continues to heat the e-liquid until it burns. In actual use, the likelihood of dry burning is very low. Additionally, research indicates that the concentration of aldehydes released by electronic products is related to the voltage; e-cigarettes typically operate below 4.0V, releasing less than 10 micrograms, which is negligible in terms of harm.

Q: Since e-cigarettes are much less harmful than cigarettes, why is Hong Kong implementing a complete ban on e-cigarettes?

A: The formulation of public health policies must weigh the pros and cons. The two premises for Hong Kong's complete ban on e-cigarettes are:

1. The number of smokers in Hong Kong is small.

2. Hong Kong has a leading global tobacco control policy. Although the harm of e-cigarettes is far less than that of cigarettes, their trendy nature poses a risk of enticing youth to smoke, making a complete ban the most suitable option for Hong Kong's high standards of tobacco control. In contrast, countries like the US and UK, which have higher medical standards than Hong Kong, choose not to ban e-cigarettes because they recognize them as a harm-reduction product that is significantly less harmful than cigarettes, effectively reducing the number of smokers and particularly the harm of secondhand smoke. Therefore, although the FDA has implemented regulatory measures for e-cigarettes, it has never suggested a complete ban.