Healthcare contributes up to 10% of global greenhouse-gas emissions, yet most reform efforts target the wrong things. The real drivers are supply chains, anaesthetic gases, and preventable admissions - not hospital lighting. And three persistent myths are slowing the fixes that already exist.
Three Myths Blocking Real Progress
Three misconceptions keep stalling healthcare decarbonization.
First, that going green compromises patient care. The evidence points the other way. Reducing unnecessary procedures and cutting low-value interventions tends to lower emissions and improve outcomes at the same time.
Second, that healthcare is too fragmented to coordinate. Large health systems have already set binding net-zero targets and tracked progress publicly. Complexity is real, but it is not a permanent excuse.
Third, that individual clinicians are the main lever. Procurement contracts, infrastructure design, and pharmaceutical supply chains drive the majority of emissions. Framing this as a personal responsibility issue lets systemic actors off the hook.
Only 33% of nurses and midwives were familiar with the term net-zero healthcare, and 76.9% identified inadequate implementation of environmental policies as a major barrier to sustainable practice. Awareness gaps reinforce all three myths.
Where Interventions Land Hardest
Three targets consistently deliver the highest yield.
Supply chain reform comes first. Switching to lower-carbon suppliers and reusable devices can shrink the largest emissions category in most health systems. Procurement is policy.
Anaesthetic gas substitution is next. University Hospital Southampton cut anaesthetic gas waste by 87% by deactivating central piped nitrous oxide systems, with no compromise to patient safety.
Preventive care rounds out the list. Every avoided hospitalization eliminates the energy, consumables, transport, and waste tied to that entire care episode. Prevention is decarbonization.
