E-cigarettes Show Lower Cell Toxicity Than Traditional Cigarettes

Nov.18.2022
E-cigarettes Show Lower Cell Toxicity Than Traditional Cigarettes
The study found that e-cigarettes have less impact on cells than traditional cigarettes, using extracellular vesicle proteomics for analysis.

On November 5th, a research team led by Associate Researcher Yu Suhong from Fuzhou University published a paper in the authoritative global toxicology journal, "Toxicology in Vitro," which found that the impact of electronic cigarettes on cells is significantly lower than that of traditional cigarettes.


The study used exosome proteomics for the first time to compare the effects of electronic cigarettes and traditional cigarettes on human bronchial epithelial cells. Exosomes are small membrane vesicles containing complex RNA and proteins, which can be used as biomarkers for early diagnosis and prognosis evaluation of diseases such as cancer.


Research data shows that cigarette tar leads to more differences in protein expression of extracellular vesicles within cells, and these are significantly enriched in cancer signaling pathways. Meanwhile, differences caused by e-cigarettes are less pronounced. Toxicology studies have also found that cigarette tar significantly inhibits cell activity, while e-cigarette tar did not produce similar negative effects, indicating that the cellular toxicity of e-cigarettes is relatively low.


The paper was published in the toxicology SCI journal, "In Vivo Toxicology.


In recent years, several studies have found that electronic cigarettes may be a form of harm reduction product.


In 2021, the Pennsylvania State University College of Medicine published a paper in Cancer stating that e-cigarettes could be effective tools for quitting smoking and also decrease the production of carcinogens in smokers' lungs. In 2022, an editorial in Nature suggested that for patients with gum health concerns, e-cigarettes may be a safer nicotine substitute and could reduce the risk of oral cancer.


According to Associate Researcher Yu Suhong, this study is the first to systematically analyze the safety of cigarettes and e-cigarettes starting from extracellular vesicles, filling a gap in the relevant field.


According to research findings, electronic cigarettes are less harmful than traditional cigarettes and may be a reduced-harm product," said Yu Suhong. However, electronic cigarettes are not entirely safe and should not be used by non-smokers.



Disclaimer

This article is provided solely for professional research, industry discussion, and informational purposes. Any references to brands, companies, products, technologies, or policies are made for factual reporting and analytical purposes only, and do not constitute endorsement, recommendation, promotion, or advertising by 2Firsts.

Nicotine-containing products, including but not limited to cigarettes, e-cigarettes, heated tobacco products, and nicotine pouches, carry significant health risks. Readers are responsible for complying with all applicable laws and regulations in their respective jurisdictions, including age restrictions and access limitations.

The information contained in this article should not be regarded as investment, legal, medical, regulatory, or commercial advice. While 2Firsts strives to ensure the accuracy and reliability of its content, it does not assume liability for any direct or indirect loss arising from errors, omissions, inaccuracies, or reliance on the information contained herein.

This article is not intended for individuals below the legal age for accessing tobacco or nicotine-related information in their jurisdiction.

 

Copyright Notice

This article is either original content produced by 2Firsts or content reproduced, translated, summarized, or adapted from third-party sources with attribution where applicable. The intellectual property rights of the original content remain with 2Firsts or the respective original rights holders.

No individual or organization may copy, reproduce, distribute, republish, modify, translate, or otherwise use this content without prior authorization. Any unauthorized use may result in legal action.

For copyright-related inquiries, corrections, or removal requests, please contact: info@2firsts.com.

 

AI-Assisted Translation and Editing Notice

Portions of this article may have been translated, edited, or reviewed with the assistance of artificial intelligence tools to improve efficiency and readability. Due to the limitations of AI-assisted translation and editing, discrepancies, omissions, or inaccuracies may exist when compared with the original source.

Where applicable, readers are advised to refer to the original source for the most complete and accurate information. If you identify any errors or believe that any content infringes upon your rights, please contact us at info@2firsts.com, and we will review and address the matter promptly.

Product | PMI Launches Airport-Exclusive IQOS Skylens Limited Edition, Expanding From Japan’s Narita to Travel Retail Markets in 13 Countries Summary
Product | PMI Launches Airport-Exclusive IQOS Skylens Limited Edition, Expanding From Japan’s Narita to Travel Retail Markets in 13 Countries Summary
Philip Morris International (PMI) has introduced the airport-exclusive limited-edition IQOS ILUMA i PRIME Skylens, the company’s first device created specifically for airport travel retail. Inspired by the world of flight and finished in metallic blue, Skylens debuted at Narita International Airport in Japan before expanding into selected airport duty-free and travel-retail channels across 13 countries in Europe, Asia, the Middle East and Africa. The product retains the existing IQOS ILUMA i PRIME platform, with differentiation centered on airport exclusivity, design and travel-retail execution rather than a new heating architecture.
PMI
Aug.19
JAMA Issues First U.S. Clinical Guidance on Vaping for Smoking Cessation, Urging Complete Switch From Cigarettes
JAMA Issues First U.S. Clinical Guidance on Vaping for Smoking Cessation, Urging Complete Switch From Cigarettes
JAMA has published a Special Communication offering systematic recommendations for U.S.-based clinicians on the use of nicotine e-cigarettes in adult smoking cessation. Developed by the Harm Reduction Workgroup of the Society for Research on Nicotine and Tobacco’s Treatment Research Network, the paper recommends including e-cigarettes alongside FDA-approved cessation medications in risk-benefit discussions. It cites high-certainty evidence that nicotine e-cigarettes achieve higher quit rates than nicotine replacement therapy and evidence suggesting efficacy comparable to highly effective medications such as varenicline and cytisine. For adults who choose vaping to quit, the authors recommend FDA-authorized products, sufficient nicotine delivery and a rapid, complete transition away from cigarettes rather than prolonged dual use.
Aug.13
Italy and Greece Oppose Ireland’s Nicotine Product Bill, Raising EU Regulatory Concerns
Italy and Greece Oppose Ireland’s Nicotine Product Bill, Raising EU Regulatory Concerns
Italy and Greece have opposed Ireland’s proposed nicotine product regulations, arguing that the measures could affect EU market coordination and the free movement of products. Ireland plans to introduce stricter rules covering nicotine products including vapes and nicotine pouches, with measures involving packaging, marketing and sales controls. The dispute highlights differences among EU member states between stronger public health protections and maintaining regulatory consistency within the bloc’s single market.
Jul.29
BREAKING | China’s Tobacco Regulator Summons iMiracle Over Suspected Compliance Breaches
BREAKING | China’s Tobacco Regulator Summons iMiracle Over Suspected Compliance Breaches
Based on public records reviewed by 2Firsts, this is the first time China’s State Tobacco Monopoly Administration has publicly announced regulatory talks with an e-cigarette company.
Jul.29
2Firsts Data | China’s U.S. Vape Exports Have Yet to Regain Previous Growth Momentum in H1 2026, but Hardware Grew 15.2% and 6-Methyl Nicotine-Related Products Rose 234.7%
2Firsts Data | China’s U.S. Vape Exports Have Yet to Regain Previous Growth Momentum in H1 2026, but Hardware Grew 15.2% and 6-Methyl Nicotine-Related Products Rose 234.7%
China’s vape exports to the U.S. reached approximately $1.58 billion in the first half of 2026, remaining broadly stable from a year earlier but still below previous growth momentum. 2Firsts’ analysis of China Customs data shows that the U.S. market has not simply returned to its previous trajectory after the enforcement shock and inventory-driven swings of 2025. Instead, export momentum is shifting across product categories. Vaping devices and atomization hardware increased 15.2% year over year, while 6-methyl nicotine-related and other nicotine substitute products surged 234.7%. Meanwhile, traditional nicotine-containing vaping products continued to face pressure.
Jul.22
Product | KT&G Brings LOOP Nicotine Pouches to South Africa, Supporting ASF’s Expansion Across Africa
Product | KT&G Brings LOOP Nicotine Pouches to South Africa, Supporting ASF’s Expansion Across Africa
KT&G has introduced nicotine pouch brand LOOP in South Africa, expanding its modern oral nicotine portfolio. Developed by Swedish company Another Snus Factory (ASF), LOOP is a tobacco-free nicotine pouch brand. KT&G and U.S. tobacco company Altria previously participated in ASF’s strategic development, and the South Africa launch represents a further step in LOOP’s international expansion.
Aug.06