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.

 RFK Jr. Spokesman Resigns Over FDA Authorization of Fruit-Flavored Vapes
RFK Jr. Spokesman Resigns Over FDA Authorization of Fruit-Flavored Vapes
Richard Danker, a senior public affairs official in Health Secretary Robert F. Kennedy Jr.’s team, resigned from his role at HHS over the FDA’s recent authorization of fruit-flavored vaping products. In a resignation letter addressed to President Donald Trump, Danker argued that the products could expose minors to nicotine addiction, lung damage, and increased cancer risks, while also conflicting with recent HHS guidance on youth risks associated with flavored nicotine products.
News
May.15
China Tobacco International HK Warns First-Half Revenue May Fall 25%-30%, Tobacco Leaf and Duty-Free Exposure Highlight Reliance on Traditional Tobacco
China Tobacco International HK Warns First-Half Revenue May Fall 25%-30%, Tobacco Leaf and Duty-Free Exposure Highlight Reliance on Traditional Tobacco
CTIHK expects first-half 2026 revenue to fall 25%-30%, mainly due to lower tobacco leaf imports and delayed cigarette shipments to China’s domestic duty-free market. Its 2025 revenue mix—nearly 90% from tobacco leaf-related businesses and less than 1% from new tobacco products—shows continued exposure to traditional supply chains and trade variables.
Jun.18
 BAT London Shares Gain 13.99% as FDA Vape Decision Draws Market Attention
BAT London Shares Gain 13.99% as FDA Vape Decision Draws Market Attention
British American Tobacco’s London-listed shares rose 13.99% last week, as investors focused on the U.S. Food and Drug Administration’s recent authorization of flavored Glas e-cigarette products, the dismissal of a U.S. sanctions-related criminal case against BAT, and the company’s previously announced share buyback plan and newer nicotine business performance.
BAT
May.18
BofA: U.S. Nicotine Market Splits as Vapor Sales Fall 17.2% and Oral Tobacco Rises 5.8%
BofA: U.S. Nicotine Market Splits as Vapor Sales Fall 17.2% and Oral Tobacco Rises 5.8%
According to Investing.com citing Bank of America scanner data for the four weeks ending May 30, U.S. nicotine category performance was mixed, with cigarette, vapor and cigar sales declining while oral tobacco sales rose 5.8%.
Jun.10
BAT Estimates U.S. Unauthorized Vape Market at $9.4 Billion, Plans New Vuse and Velo Launches After FDA Enforcement Shift
BAT Estimates U.S. Unauthorized Vape Market at $9.4 Billion, Plans New Vuse and Velo Launches After FDA Enforcement Shift
British American Tobacco (BAT) CEO Tadeu Marroco said the U.S. unauthorized vape market is worth about £7 billion, or US$9.43 billion. Following a shift in FDA enforcement policy, BAT plans to launch flavored Vuse products in the third quarter and an updated Velo pouch in August or September.
Jun.15
From Heating Blades to Heating Paper? CTHB Patent Points to Microwave Heated Tobacco Design
From Heating Blades to Heating Paper? CTHB Patent Points to Microwave Heated Tobacco Design
According to China’s patent office records, a patent owned by China Tobacco Hubei Industrial Corporation (CTHB) for “cigarette paper and a cigarette for microwave heating” was granted on May 19, 2026. The patent describes cigarette paper with an outer wrapping layer, a heating layer, and an isolation heat-conducting layer, allowing it to absorb microwave energy, convert it to heat, and transfer that heat to the aerosol-generating substrate.
Jun.10