Wilderness Medicine Updates Ep. 7 - Wildfire Smoke and Your Health
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May 24, 2023 Wildfire smoke poses serious health risks, especially for active individuals. Discover why PM2.5 particles are particularly harmful and how current air quality guidelines might not be trustworthy. The discussion delves into whether the benefits of exercise truly outweigh the dangers of smoke exposure. Practical tips for minimizing health risks when outdoors during wildfire season are shared, urging listeners to stay informed while navigating the challenges posed by climate change and media narratives.
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Why Wildfire Smoke Is Especially Harmful
- Wildfire smoke contains PM2.5 particles and volatile combustion products that penetrate deep into the lungs and bloodstream.
- These particles trigger inflammation and systemic effects that harm both lungs and the cardiovascular system.
Cardiovascular Damage From PM2.5
- Inhaled PM2.5 causes inflammation, oxidative stress, platelet dysfunction, and increased clotting that affect heart and vessels.
- Short-term exposures notably raise blood pressure, reduce vessel compliance, and accelerate atherosclerosis.
Risk Scales Strongly With Exposure
- Risk increases scale with exposure; short-term PM2.5 spikes can raise heart attack or stroke risk substantially.
- Wildfire smoke can create PM2.5 concentrations far exceeding urban pollution, sometimes 5–10× worst diesel exhaust.