Facts about vaping

Regarding e-cigarettes, here are some key facts based on the latest research and authoritative institutions (such as the World Health Organization, the US CDC, etc.), covering their health impacts, usage data, and regulatory status.
?? Health impact: Not harmless "steam"
The aerosol produced by e-cigarettes is not harmless water vapor; instead, it contains various harmful substances.
Harmful chemical components: More than 200 chemical substances have been detected in e-cigarette aerosol, including:
Carcinogens such as formaldehyde and acetaldehyde
The tobacco-specific nitrosamines (TSNAs) are partially classified as Class I carcinogens.
Substances such as propylene glycol, which can be irritating, may cause severe coughing, eye discomfort and lung damage.
Respiratory system damage: A large systematic review and meta-analysis conducted in 2025 concluded that e-cigarettes are associated with respiratory system damage. The specific risks include:
Users of electronic cigarettes who never smoke have a 1.9 times higher risk of developing respiratory symptoms compared to non-users.
There is moderate certainty evidence suggesting that e-cigarettes increase the risks of chronic obstructive pulmonary disease (COPD), asthma, lung inflammation and damage.
Cardiovascular system impact: Studies have shown that acute exposure to e-cigarettes can cause significant increases in heart rate and blood pressure, and is associated with an increased risk of cardiovascular diseases.
Heavy metal exposure: A 2025 study found that some disposable electronic cigarettes release lead levels equivalent to smoking nearly 20 packs of traditional cigarettes. Additionally, the detected levels of heavy metals such as nickel, chromium, and antimony also exceeded safety thresholds, significantly increasing the risks of cancer, nerve damage, and respiratory diseases.
Cytotoxicity: The smoke from electronic cigarettes is cytotoxic, which can damage DNA and harm the epithelial cells of the lungs and bronchi.
Nicotine addiction and brain impact: The majority of e-cigarettes contain nicotine. Nicotine is highly addictive and can cause permanent changes to the brain development of teenagers, affecting learning, attention, and memory. The nicotine content in one cartridge can be equivalent to that of 20 cigarettes.
?? Popularity Statistics: A Global Phenomenon
The use of e-cigarettes has reached a considerable scale worldwide, especially among young people.
Total number of global users: It is estimated that the total number of global e-cigarette users has exceeded 100 million by 2025. Another study estimates that the number of adult nicotine e-cigarette users alone will reach approximately 129 million in 2025.
Usage among teenagers: The World Health Organization (WHO) estimates that there are at least 15 million teenagers aged 13 to 15 using e-cigarettes worldwide. In the countries for which data is available, the e-cigarette usage rate among teenagers (aged 13-15) (7.2%) is 9 times that of adults.
Regional and national data:
The United States: The 2025 National Youth Tobacco Survey conducted by the CDC revealed that 5.2% of middle and high school students reported having used e-cigarettes in the past 30 days.
UK: A 2025 survey estimated that 10% of British adults (approximately 5.5 million people) use e-cigarettes.
Canada: In 2022, 20% of young people aged 20-24 reported having used e-cigarettes in the past 30 days.
⚖️ Regulation and Law: Increasingly Stringent Control
Given the health risks involved, governments around the world are imposing increasingly strict regulations on e-cigarettes.
China: Electronic cigarettes have been incorporated into the tobacco product regulatory system.
Production and Sales: To engage in business related to electronic cigarettes, a tobacco license is required.
Product standard: The state has issued a mandatory national standard for "Electronic Cigarettes" (GB 41700-2022).
Taste Ban: The "Electronic Cigarette Management Measures" explicitly prohibits the sale of flavored electronic cigarettes other than tobacco flavors.
Protection of Minors: The law strictly prohibits the sale of e-cigarettes to minors.
Cracking down on illegal products: The government has severely cracked down on illegal activities such as the production and sale of "headline electronic cigarettes".
The United States: The FDA of the United States emphasizes that no electronic cigarettes are safe. The CDC also clearly states that electronic cigarettes should not be used by teenagers, young adults, and pregnant women. The FDA continues to take enforcement actions against unauthorized electronic cigarette products (especially those popular among young people).
?? The controversy over "harm reduction"
The debate over e-cigarettes as a smoking cessation tool continues.
Supporting party's viewpoint: The Cochrane systematic review found that nicotine e-cigarettes may be more effective than nicotine replacement therapies (such as patches, gum) in helping people quit smoking for at least six months.
Opposing viewpoint:
The World Health Organization warns that e-cigarettes are marketed as "harmless" products, but in reality they are causing children to be exposed to nicotine at an earlier age.
The authoritative institution has stated that no electronic cigarettes have been approved by the US FDA as an aid for quitting smoking.
Relevant research shows that e-cigarettes, as consumer products, have no significant effect on quitting smoking. Instead, there is a widespread phenomenon of their being used in combination with cigarettes.
?? Summary
In conclusion, e-cigarettes are not harmless "vapor". They contain various harmful and potentially harmful substances that can cause damage to the respiratory and cardiovascular systems, and lead to nicotine addiction. Especially, they pose a serious threat to the brain development of teenagers. Although there is controversy regarding their potential as a smoking cessation tool, the clear health risks and the increasingly strict global regulatory trends are indisputable facts.