B.C. doctors warn that climate change is making allergy seasons longer and more severe, increasing health risks and burdening the healthcare system.
Rising Temperatures Drive Longer Allergy Seasons
Seasonal allergy symptoms like sneezing, congestion, and itchy eyes are lasting longer and hitting harder across British Columbia. According to Dr. Angeliki Barlas, a Port Moody-based allergist, climate change is directly contributing to the prolonged and more intense allergy seasons now being reported by patients across the province.
Warmer Weather Triggers Early and Intense Pollination
Dr. Barlas, who also serves as president of the B.C. Society of Allergy and Clinical Immunology, says warmer temperatures are leading to earlier and more aggressive pollination. “Pollen is becoming more inflammatory and affecting the immune system much more,” she explained during a CBC interview. Patients now report feeling allergy symptoms almost year-round.
Burnaby family physician Dr. Davidicus Wong agrees, stating that climate-induced seasonal shifts are confusing pollinators and extending pollen cycles.
Wildfire Smoke Worsens Respiratory Reactions
Wildfires—another climate-related crisis in B.C.—are compounding the issue. Dr. Barlas warns that pollen particles interact with wildfire smoke, creating an inflammatory mix that worsens respiratory symptoms. “Asthma patients often require more medications or even emergency care during these periods,” she noted.
Practical Advice for Managing Symptoms
Barlas recommends practical steps to limit exposure during high pollen days:
- Keep windows closed at home and in vehicles
- Shower and change clothes after outdoor activities
- Use air purifiers indoors
She also advises against using Benadryl due to potential long-term side effects like memory loss and dementia. Instead, her clinic recommends non-drowsy antihistamines such as Claritin or Allegra.
Access to Allergy Treatment and Telehealth Options
While allergy specialists are scarce in northern B.C., patients can access immunotherapy—a desensitization treatment—via telehealth with allergists based in the Lower Mainland. Referrals from primary care providers are required for this long-term solution.
“We need to understand that allergy season is no longer limited to a few months,” said Dr. Barlas. “Climate change is reshaping the way our bodies interact with the environment—and the healthcare system must adapt accordingly.”
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