The Potential Hazards of E-Cigarette and Dual Use: a Cochrane Systematic Review and Secondary Analysis

Dec.01.2022
The Potential Hazards of E-Cigarette and Dual Use: a Cochrane Systematic Review and Secondary Analysis
A study on Cochrane's systematic review found that switching from smoking to e-cigarettes significantly reduces potential harm biomarkers. However, a separate study found that using both traditional and e-cigarettes has the same harmful effect on the heart as smoking alone.

Title: Biomarkers of potential harm from switching from tobacco smoking to e-cigarette use, dual use or cessation: a Cochrane systematic review and meta-analysis of secondary analysis of data from randomized controlled trials of electronic cigarettes for smoking cessation. In this study, researchers conducted a secondary analysis of data from randomized controlled trials of electronic cigarettes for smoking cessation in Greece, Italy, Poland, the United Kingdom, and the United States. The conclusion drawn was that switching from tobacco smoking to e-cigarette use significantly lowered potential harmful biomarkers.


At the same time, according to a recent study published in the American Heart Association journal "Circulation," using both traditional cigarettes and e-cigarettes poses the same risk to the heart as smoking alone.


A study titled "Association Between Patterns of Cigarette and E-Cigarette Use and Inflammatory and Oxidative Stress Biomarker Levels in U.S. Adults: A Population Assessment of Tobacco and Health Study" analyzed more than 7,100 U.S. adults aged 18 and over to explore the connection between smoking, vaping, and heart health.


Researchers used data from the Population Assessment of Tobacco and Health (PATH) study to search for biomarkers of inflammation and oxidative stress, as these biomarkers are known to indicate predictive factors for heart disease and cardiovascular events, such as heart attacks and heart failure.


After analyzing five biomarkers of inflammation and oxidative stress, participants were divided into four groups: exclusive smokers, exclusive e-cigarette users, dual users, and non-users of e-cigarettes. Researchers listed the following findings:


Participants who only use electronic cigarettes showed similar levels of inflammation and oxidative stress as those who do not use electronic cigarettes or smoke at all. However, compared to participants who do not use cigarettes or electronic cigarettes, those who smoke exclusively or use both cigarettes and electronic cigarettes had higher levels of all evaluated biomarkers. Participants who only use electronic cigarettes had significantly lower levels of nearly all inflammation and oxidative stress biomarkers compared to those who only smoke. However, participants who use both cigarettes and electronic cigarettes had biomarker levels similar to those who exclusively smoke. 2FIRSTS will continue to report on this issue, with updates available on the "2FIRSTSAPP". Scan the QR code below to download the app.



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.

UK Vape Duty Starts in October as Hayati, DOJO and Others Launch Lower-Capacity Products With Lower Per-Unit Tax
UK Vape Duty Starts in October as Hayati, DOJO and Others Launch Lower-Capacity Products With Lower Per-Unit Tax
The UK's Vaping Products Duty will take effect on October 1, 2026, at a flat rate of £2.20 per 10ml of vaping liquid. Ahead of implementation, DOJO, PIXL and Hayati have introduced or been reported to be adding lower-capacity tiers alongside larger products. DOJO has added a 6ml BLAST7K Fresh below its 10ml BLAST10K Fresh, PIXL offers both a 12ml 8000 and a 6ml 5K, while retailer Ninja Vapes says Hayati is preparing a 7ml 4K alongside its existing 12ml 6K. The pattern points to a growing lower-capacity tier in the UK market, although the brands have not all explicitly linked the changes to the new duty.
Sep.23
Altria Showcases Ploom, Marlboro Heated Tobacco Sticks and Non-Nicotine Energy Products at NACS Show 2026
Altria Showcases Ploom, Marlboro Heated Tobacco Sticks and Non-Nicotine Energy Products at NACS Show 2026
At the 2026 NACS Show, Altria displayed Ploom devices alongside imagery of Marlboro-branded heated tobacco sticks, while also featuring RIOT Energy and Proper Wild non-nicotine products. The booth showcased on! PLUS nicotine pouches, including 12 mg variants not listed among FDA-authorized products as of October 9, and NJOY e-cigarettes. Altria also presented convenience-store traffic figures highlighting its retail presence. 2Firsts examines the company's expanded product portfolio, non-nicotine business activities and the regulatory status of products displayed at the show.
EXPO
Oct.10
Juul Sublicense Reshapes Vuse Alto Patent Bill as Court Ends R.J. Reynolds’ 5.25% Royalty Obligation to Altria
Juul Sublicense Reshapes Vuse Alto Patent Bill as Court Ends R.J. Reynolds’ 5.25% Royalty Obligation to Altria
According to Law360 on August 31, 2026, a federal judge in North Carolina ruled that a patent sublicense between R.J. Reynolds Vapor Co. and Juul Labs Inc. relieves Reynolds of its obligation to continue paying royalties to Altria Client Services LLC over Vuse Alto. A jury had previously found that Vuse Alto infringed three Altria patents and awarded approximately $95.2 million in past damages, after which Reynolds was ordered to pay an ongoing royalty equal to 5.25% of positive net sales. The new ruling finds that a valid sublicense can eliminate future infringement, potentially ending what Altria described as hundreds of millions of dollars in future royalties.
Sep.01
FDA Unifies Tobacco Registration and Product Listing Form Across Product Categories
FDA Unifies Tobacco Registration and Product Listing Form Across Product Categories
The U.S. FDA has consolidated two tobacco establishment registration and product listing forms into a redesigned Form FDA 3741 covering all regulated product categories, including e-cigarettes, heated tobacco products and nicotine pouches. The current requirements remain limited to domestic establishments. Separately, the FDA has proposed extending registration and product listing requirements to foreign manufacturers, signaling greater regulatory attention to manufacturing entities and product-level information across the tobacco and nicotine supply chain.
FDA
Sep.30
2Firsts On-Site | PMI Brings IQOS, ZYN, VEEV and Marlboro Together at Its “Boulevard” at InterTabac 2026
2Firsts On-Site | PMI Brings IQOS, ZYN, VEEV and Marlboro Together at Its “Boulevard” at InterTabac 2026
At InterTabac 2026 in Dortmund, PMI is presenting multiple brands and products along “The PMI Boulevard,” including IQOS, ZYN, VEEV and Marlboro. On-site images captured by 2Firsts show dedicated spaces including the IQOS Boutique, ZYN Café, PMI Gallery and Marlboro Office
Market
Sep.16 by 2Firsts Perspectives
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