Benefits of vaping

Regarding the "benefits" of e-cigarettes, the current consensus among medical professionals is that for people who have never smoked, e-cigarettes offer no benefits and instead carry clear health risks. The "benefits" it may bring are highly dependent on a specific premise: as a complete substitute for traditional cigarettes, to help current smokers quit smoking.
Without this premise, the benefits of e-cigarettes cannot be valid. Based on this premise, the following are several "relative advantages" that e-cigarettes may bring:
Helping to quit smoking
This is the most crucial point when discussing the benefits of electronic cigarettes. Numerous studies, including a review published by the authoritative Cochrane Library, have indicated:
The effectiveness is superior to some traditional methods: Using electronic cigarettes containing nicotine to quit smoking may be more effective than using nicotine patches, gum, etc. as nicotine replacement therapy (NRT), and also superior to nicotine-free electronic cigarettes or those without any auxiliary measures.
Specific data: The data shows that among every 100 people who attempted to quit smoking using nicotine-containing e-cigarettes, approximately 8 to 11 were able to successfully quit for at least 6 months. In contrast, about 6 people were successful using nicotine replacement therapy, while only 4 were successful without any assistance.
⚠️ Reducing harm
This is a kind of "choosing the lesser of two evils" logic. The main "benefit" of e-cigarettes lies in the fact that they are "relatively" safer than traditional cigarettes.
Avoiding combustion products: Traditional cigarettes produce thousands of harmful chemicals during combustion, among which at least 70 are known carcinogens. E-cigarettes generate aerosols by heating the e-liquid, thus avoiding the combustion process.
Reducing exposure to harmful substances: Therefore, completely switching from smoking to using e-cigarettes can significantly reduce exposure to many toxic and harmful substances such as tar and carbon monoxide.
Enhancing the life experience
This part of the "benefits" is more reflected in social interactions and personal senses rather than in the health aspect.
Reduce odors: The aerosol produced by electronic cigarettes usually does not have the stubborn and pungent tar-like smell of traditional cigarettes. The residual odor is much lighter.
Easier to control the intake: The e-cigarette liquid has clear nicotine concentration labels (such as 3mg, 5mg), making it convenient for users to understand and control the intake of nicotine.
Avoid open flames: E-cigarettes are powered by batteries and do not require the use of open flames, thereby reducing the risk of fire caused by cigarette butts.
⚠️ Key Risks and Controversies
When considering the aforementioned "benefits", one must simultaneously address the significant risks and controversies associated with them:
Not harmless: The aerosol from e-cigarettes is not "steam", and still contains harmful substances such as nicotine (highly addictive), carcinogens, and heavy metals.
Harm to teenagers: Nicotine can damage the brain development of teenagers (under the age of 25), affecting their attention, learning and emotional control. Teenagers who use e-cigarettes are nearly three times more likely to smoke traditional cigarettes in the future.
Dual use risk: Using both electronic cigarettes and traditional cigarettes simultaneously (dual use) will not reduce the risks; instead, it may cause greater health hazards.
Lack of long-term data: E-cigarettes are a relatively new product, and the long-term (10-year, 20-year) health effects of them are still not clear.
 Summary
For non-smokers, especially teenagers: E-cigarettes offer no benefits and only pose clear health risks.
For current smokers: E-cigarettes may be a less harmful alternative and can serve as a smoking cessation tool. However, this does not mean they are safe, and their effectiveness varies from person to person. When choosing this path, it should be done under professional guidance, and the ultimate goal should be to completely quit nicotine.