Updated 25/05/2026
Wood burning stoves, increasingly popular as a supposedly “green” heating alternative, carry significant hidden environmental and health costs beyond local air pollution. According to a new analysis published in The BMJ, wood combustion contributes substantially to climate change through multiple pathways, challenging common assumptions about biomass as a carbon-neutral energy source.
Wood Burning’s Climate Impact Sources
Multiple emission sources contribute to global heating beyond direct combustion
Source: BMJ Analysis, 2026 | Georgian Medical Journal News
Black Carbon: The Powerful Climate Accelerator
The BMJ analysis highlights that emitted black carbon acts as a very powerful short lived contributor to global heating and contributes to far distant ice melt, resulting in accelerated heating.
Hidden Emissions Throughout the Supply Chain
According to The BMJ report, emissions related to logging, sawmill activity, transport, and often kiln drying can be substantial, extending the climate impact of wood burning far beyond the combustion itself.
For more analysis on global health and environmental impacts, these supply chain emissions challenge wood’s classification as a low-carbon fuel.
Health Impacts Compound Climate Concerns
The BMJ analysis references previous research by Borland highlighting the health harm caused by wood burning in urban stoves. Wood burning creates immediate health hazards through particulate and gaseous pollution from combustion.
Our clinical updates section regularly covers the growing body of evidence connecting air quality to cardiovascular and respiratory health outcomes.
Renewable Electricity as the Clear Alternative
According to The BMJ analysis, the path forward requires transitioning to 100% renewable electricity for home heating systems. This approach obviates the harm to health caused by particulate and gaseous pollution from combustion of gas in boilers or stoves.
Heat pumps powered by clean electricity eliminate both local air pollution and the complex carbon emissions associated with biomass burning.
Emissions related to logging, sawmill activity, transport, and (often) kiln drying can be substantial. Further, emitted black carbon acts as a very powerful short lived contributor to global heating
— BMJ Editorial Team, The BMJ (2026)
Key takeaways
- Wood burning generates climate-warming emissions throughout its supply chain, not just during combustion
- Black carbon from wood fires accelerates ice melting and global heating
- Renewable electricity-powered heating eliminates both health and climate impacts of combustion
Frequently asked questions
Is wood burning really worse for climate than gas heating?
According to The BMJ analysis, wood burning produces black carbon emissions that are extremely potent climate warmers, plus substantial supply chain emissions. Gas heating produces particulate and gaseous pollution but avoids black carbon emissions.
What makes black carbon concerning for climate?
The BMJ analysis identifies black carbon as a very powerful short-lived contributor to global heating that also contributes to far distant ice melt, accelerating warming processes.
What is the recommended heating alternative?
The BMJ analysis supports moves for homes to be powered by 100% renewable electricity, which eliminates harmful emissions from combustion-based heating systems.
The BMJ analysis concludes that the threat of climate change is now immediate and grave, requiring a transition away from all combustion-based heating systems, including wood burning despite its “renewable” label.
Source: Wood burning also contributes to climate change
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Disclaimer. This article is health journalism intended for general information and education. It is not medical advice and is not a substitute for professional diagnosis or treatment. Always consult a qualified healthcare provider about your individual circumstances. Full disclaimer →
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Editorial standards. This article was produced under the GMJ News editorial process, with oversight by the GMJ Editorial Board. Our editorial process. Spotted an error? Contact the editorial team.
