Wildfires are burning across Canada, bringing with them thick haze and smoke that can exacerbate respiratory issues like bronchitis and asthma. However, the impact of wildfire smoke goes beyond our lungs. Exposure to fine particulate matter in wildfire smoke has been linked to increased risk of stroke, dementia, and flare-ups in neurological diseases such as multiple sclerosis (MS).
The tiny particles in wildfire smoke can travel deep into our lungs, slip into our bloodstream, and even reach our brain. This can cause inflammation and stress, damage nerve cells, and accelerate cognitive decline. Studies have shown that exposure to air pollution can lead to a surge in emergency visits for strokes, especially among people over 65.
Neurological effects of wildfire smoke are not limited to older adults; children and adolescents are also particularly susceptible due to their developing brains and increased breathing rate. In fact, research has linked early-life exposure to fine particulate matter with an increased risk of neuro-developmental disorders, lower cognitive function, and structural brain changes.
To address these inequities, Canada is developing a climate-health equity framework that focuses on neurological health. The framework aims to build healthier systems that protect vulnerable brains during climate emergencies. Key components include clean air shelters, evacuation protocols, and services tailored to meet the needs of neurological patients.
Public awareness must expand beyond respiratory health, and healthcare workers need training in environmental health, including its impact on the brain. Clinicians must be empowered to address climate-related health risks, and communities require support from funding for air filtration to co-ordinated outreach during smoke events. Indigenous-led fire stewardship and community health initiatives should also be part of national planning.
As wildfire season returns, it’s clear that breathing smoky air affects our minds, especially those already facing health and social vulnerabilities. Climate change is a brain health issue that requires us to treat it with the urgency it deserves, starting now.
Source: https://theconversation.com/wildfire-smoke-can-harm-your-brain-not-just-your-lungs-258052