Study finds reduced toxicity of ENDS compared to cigarettes.

Jul.18.2022
Study finds reduced toxicity of ENDS compared to cigarettes.
Researchers validated reliability of results. Inhalation of e-cigarette vapor caused less toxicity than cigarette smoke on human bronchial epithelial cells.

The research team established the reliability of their results through multiple methods. After exposing human bronchial epithelial cells (NCI-H292) to tobacco smoke and e-cigarette vapor, the researchers assessed the inflammatory cytokines interleukin-6 and interleukin-8, as well as the remodeling mediator matrix metalloproteinase-1.


Researchers have confirmed that nearly 80% of the cytotoxic effects are caused by volatile compounds in the smoke vapor phase. As a result, they found that the cytotoxic effects of ENDS aerosols are reduced. However, the data collected on smoke-induced inflammation and remodeling activity is vastly different from the original report. Considering independent data collected from multiple laboratories, the study confirms that the toxicity of ENDS is reduced compared to cigarettes.


I'm sorry, I cannot complete this task as there is no text provided in a foreign language for me to translate. Please provide the original text in a foreign language for me to translate. Thank you.



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.

RLX Technology Dropped From FTSE All-World as International Business Reaches 68.5% of Q2 Revenue
RLX Technology Dropped From FTSE All-World as International Business Reaches 68.5% of Q2 Revenue
RLX Technology (NYSE: RLX) has been removed from the FTSE All-World Index, effective September 21. FTSE Russell records show RLX was already part of its global equity index universe by 2022, when its American depositary receipts were classified as China Large Cap securities. Trading volume rose to about 44.77 million shares on September 18, roughly 23 times the previous session's volume. RLX reported RMB1.0105 billion in second-quarter revenue, up 14.8% year over year, with international operations contributing 68.5%. The company also acquired a 51% stake in one of Western Europe's largest distributors of next-generation smoke-free and FMCG products in July.
Sep.22
PMI Showcases ZYN, IQOS and U.S. Investments at NACS Show 2026
PMI Showcases ZYN, IQOS and U.S. Investments at NACS Show 2026
At the 2026 NACS Show in Las Vegas, Philip Morris International (PMI) showcased its ZYN nicotine pouches, IQOS heated tobacco products and U.S. investments. A 2Firsts review of FDA records found that several ZYN products displayed at the booth were not on the agency's marketing authorization list, including certain nicotine strengths and flavors. A PMI booth representative also confirmed that IQOS is currently sold in three U.S. states, while the newer IQOS ILUMA system remains under FDA review.
EXPO
Oct.10
Kelly White Bets on Female Consumers as Nicotine Pouch Competition Intensifies | 2Firsts Interview
Kelly White Bets on Female Consumers as Nicotine Pouch Competition Intensifies | 2Firsts Interview
Swedish nicotine pouch brand Kelly White is building its strategy around adult female consumers. Founder and CEO Sophia Wilsby told 2Firsts that women accounted for around 70% of the brand’s repeat customers on HAYPP in Sweden in 2025. The interview explores female consumer segmentation, product and design differentiation, gender stereotypes, packaging regulation, and how independent brands can compete with global players such as ZYN and VELO while considering funding, partnerships and future ownership options.
Business
Sep.24
UK HMRC Launches Vape Duty Stamps on October 1, Ushering in Supply-Chain Traceability as Chinese Exporters Face New Compliance Hurdles
UK HMRC Launches Vape Duty Stamps on October 1, Ushering in Supply-Chain Traceability as Chinese Exporters Face New Compliance Hurdles
HM Revenue & Customs put the UK's Vaping Products Duty and Vaping Duty Stamps Scheme into effect on October 1. All vaping liquids manufactured in or imported into the UK are now subject to duty at £2.20 per 10ml, regardless of nicotine content. The stamp regime will introduce digital functionality designed to provide traceability throughout the supply chain, with approved manufacturers, importers and warehousekeepers required to report product movements and retailers and consumers eventually able to scan stamps to verify authenticity. China exported $177 million of vape-related products to the UK in August, up 51.4% year over year, increasing the significance of the new compliance regime for China's Shenzhen-centered vape supply chain.
Regulations
Oct.04
Russia Expands Temporary Administration of JTI Assets in Second Round: From Four to All Seven Russian Entities, With Approximately $9.5 Billion in Related Assets
Russia Expands Temporary Administration of JTI Assets in Second Round: From Four to All Seven Russian Entities, With Approximately $9.5 Billion in Related Assets
Japan Tobacco Inc. (JT) confirmed on November 9, 2026, that all seven of its Russian entities had been placed under temporary administration after a second presidential decree added three companies to the four designated a day earlier. The additional entities are associated with importing, management, holdings and the former supply of Ploom heated-tobacco devices. JT disclosed approximately ¥1.5 trillion in Russian business-related assets as of September 30, including ¥360 billion in cash and deposits, and approximately ¥200 billion in liabilities. Under its revised FY2026 forecast, Russia accounts for about 25% of adjusted operating profit. JT said operations in Russia were continuing, while the financial impact remained under assessment.
company
Nov.09
2Firsts Interview | Cigarette Sales Fall as Smokeless Alternatives Gain in U.S. Convenience Stores, NACS Says
2Firsts Interview | Cigarette Sales Fall as Smokeless Alternatives Gain in U.S. Convenience Stores, NACS Says
Ahead of the 2026 NACS Show, 2Firsts interviewed Chris Rapanick, NACS managing director of research, on changes reshaping the U.S. convenience-store tobacco and nicotine market. NACS data show cigarette sales declining while smokeless alternatives, including nicotine pouches, continue to grow. The interview also examines higher OTP margins, shifting backbar space, weaker store traffic, regulatory uncertainty and NACS’ outlook for 2027, offering a retailer-side view of one of the world’s largest nicotine markets.
Interview
Oct.03