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.


This document has been generated through artificial intelligence translation and is provided solely for the purposes of industry discourse and learning. Please note that the intellectual property rights of the content belong to the original media source or author. Owing to certain limitations in the translation process, there may be discrepancies between the translated text and the original content. We recommend referring to the original source for complete accuracy. In case of any inaccuracies, we invite you to reach out to us with corrections. If you believe any content has infringed upon your rights, please contact us immediately for its removal.

Maldives Implements World's First Generational Prohibition on Tobacco, Banning Sales and Smoking for Those Born After 2007
Maldives Implements World's First Generational Prohibition on Tobacco, Banning Sales and Smoking for Those Born After 2007
The Maldives has implemented a generational tobacco ban, effective November 1, 2025, making it the only country to permanently prohibit anyone born on or after January 1, 2007 from buying or using tobacco. Initiated by President Mohamed Muizzu, the policy aims to create a tobacco-free generation and includes a nationwide ban on e-cigarettes, with fines up to 50,000 rufiyaa (US$3,200) for violations.
Nov.03 by 2FIRSTS.ai
Spain’s new e-cigarette e-liquid tax, in force since April 1, raises €26 million through November
Spain’s new e-cigarette e-liquid tax, in force since April 1, raises €26 million through November
Spain’s Tax Agency monthly collection report shows the new tax on e-cigarette e-liquids, in force since April 1, raised €26 million through November, including €4 million in November. The levy began three months later than the usual fiscal timetable to allow the sector to adapt, making 2025 the first year in which vaping products are taxed under a specific category.
Dec.30 by 2FIRSTS.ai
2Firsts Co-Founder and CEO Alan Zhao Speaks at PouchEX 2025: Highlighting China’s Critical Role in the Global Nicotine Pouch Industry
2Firsts Co-Founder and CEO Alan Zhao Speaks at PouchEX 2025: Highlighting China’s Critical Role in the Global Nicotine Pouch Industry
At PouchEX 2025 in Sweden, 2Firsts CEO Alan Zhao delivered an invited keynote, outlining China’s critical role in the global nicotine pouch industry from both supply chain and consumer insight perspectives, drawing significant attention from the international community.
Nov.17
ZYN Nicotine Pouches Seek MRTP Authorization; FDA Sets January Meeting
ZYN Nicotine Pouches Seek MRTP Authorization; FDA Sets January Meeting
The U.S. FDA has scheduled a Tobacco Products Scientific Advisory Committee (TPSAC) meeting for January 22, 2026, to review Swedish Match USA’s Modified Risk Tobacco Product (MRTP) applications for 20 ZYN nicotine pouch products. Although the products gained PMTA authorization in early 2025, MRTP approval is required for marketing them with reduced-risk claims.
Nov.24 by 2FIRSTS.ai
Product | NEXA FLEX Releases “Built in the USA” Version, Says All Flavors Are Tailored for Adult U.S. Users
Product | NEXA FLEX Releases “Built in the USA” Version, Says All Flavors Are Tailored for Adult U.S. Users
NEXA has introduced a disposable e-cigarette, NEXA FLEX, which is promoted as “Built in the USA,” highlighting domestic production and flavors developed for adult U.S. vaping consumers. The device retains features such as a transparent e-liquid chamber, Normal/Turbo dual modes, and up to 40,000 puffs, and is scheduled to launch in late November in Texas. Other brands, including SKE and FASTA, have also recently released products labeled as “Made in the USA” or “U.S.-assembled.”
Nov.20 by 2FIRSTS.ai
Russia’s State Duma May Soon Consider Full Ban on Vape Sales
Russia’s State Duma May Soon Consider Full Ban on Vape Sales
Russia’s State Duma will soon consider a proposal to impose a complete ban on the sale of vapes. The move follows President Vladimir Putin’s endorsement of a nationwide prohibition. Lawmaker Aleksey Volotskov said vape use has surged by 52% since early 2025, with illegal products now dominating 80% of the market.
Nov.11 by 2FIRSTS.ai