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.

From Vuse, Velo and glo to AI Consulting: Former BAT Content Lead Launches Destreza
From Vuse, Velo and glo to AI Consulting: Former BAT Content Lead Launches Destreza
Former BAT global content lead Andy Parton has left the company and launched Destreza, a London-based AI-native marketing consultancy. Parton previously worked across BAT's New Category brands Vuse, Velo and glo and had also served as Global Brand Lead for Vuse Go. Destreza says it will advise consumer businesses on AI in brand strategy, operating models, capability and agency configuration, using specialist AI agents to support research, strategy and creative development. BAT reported £3.621 billion in New Category revenue in 2025.
Sep.22
Australia Brings in Deloitte to Support Illicit Tobacco and Vape Enforcement Across Data, Processes and Project Delivery
Australia Brings in Deloitte to Support Illicit Tobacco and Vape Enforcement Across Data, Processes and Project Delivery
Australia’s Department of Home Affairs has hired Deloitte to provide data analytics, business-process, communications and project-delivery support to the Office of the Illicit Tobacco and E-Cigarette Commissioner. The government says Deloitte personnel do not provide policy advice to the Commissioner or the Australian government, with policy development and decision-making remaining with public officials. The arrangement has nevertheless drawn scrutiny because Deloitte has previously provided professional services to several tobacco and vaping companies.
Sep.03
U.S. Health Groups Seek to Overturn FDA Enforcement Discretion for Pending PMTAs as Altria's Helix, NJOY and AVM Move to Intervene
U.S. Health Groups Seek to Overturn FDA Enforcement Discretion for Pending PMTAs as Altria's Helix, NJOY and AVM Move to Intervene
American Vapor Manufacturers (AVM) and Altria subsidiaries Helix Innovations and NJOY filed separate motions on October 7, 2026, seeking to intervene on the FDA's side in a lawsuit challenging its enforcement guidance for certain e-cigarette and nicotine pouch products with pending premarket tobacco product applications (PMTAs). Seven public health and tobacco-control organizations, including the Campaign for Tobacco-Free Kids, sued the agency in July to overturn the policy. AVM argues that vacating the guidance could disrupt orders, inventory, retail distribution and investments in regulatory submissions.
Regulations
Oct.09
Imperial Brands Sees Double-Digit NGP Growth as Sixth Year of Tobacco Revenue Gains Backs £1.5 Billion Buyback
Imperial Brands Sees Double-Digit NGP Growth as Sixth Year of Tobacco Revenue Gains Backs £1.5 Billion Buyback
Imperial Brands reaffirmed its FY26 guidance in its October 8 pre-close trading update, forecasting double-digit net revenue growth in next-generation products and share gains across heated tobacco, vape and modern oral. Tobacco net revenue is expected to grow at a low-single-digit rate, marking a sixth consecutive year of growth. The company has completed its £1.45 billion FY26 share repurchase and announced a £1.5 billion buyback for FY27. Group adjusted operating profit is expected to increase 3% to 5%, while free cash flow is forecast to exceed £2.2 billion.
Oct.09
Product | PMI Launches ZYN Melts in UK, Extending ZYN Beyond Nicotine Pouches Into Dissolvable Tablets
Product | PMI Launches ZYN Melts in UK, Extending ZYN Beyond Nicotine Pouches Into Dissolvable Tablets
Philip Morris International (PMI) has launched ZYN Melts in the UK, introducing a fully dissolvable oral nicotine tablet format alongside the brand's existing nicotine pouches. The range includes Cool Mint and Peppermint, each offered at 1mg and 2mg of nicotine per tablet, creating four SKUs. Each can contains 20 tablets and is priced at £6.50 in the UK. Unlike ZYN nicotine pouches, Melts are placed between the upper lip and gum and dissolve completely during use.
News
Sep.29 by 2Firsts Perspectives
STIIIZY Redesign Fails to Escape PAX Labs Patent Import Ban as Section 337 Case Also Involves China ALD
STIIIZY Redesign Fails to Escape PAX Labs Patent Import Ban as Section 337 Case Also Involves China ALD
U.S. Customs and Border Protection ruled that STIIIZY had not shown that the redesigned cannabis-vape products covered by its latest request fall outside an ITC limited exclusion order tied to PAX Labs patents. CBP accepted some of STIIIZY’s claim-construction and non-infringement arguments, but the company did not address two additional claims in the same patent. Earlier STIIIZY redesigned cartridges and certain associated components imported with them had received separate CBP clearance.
Sep.16