Study links wildfire smoke to more migraine-related emergency visits

A new Health Canada study has found that periods of wildfire smoke are associated with a rise in emergency department visits for migraine and other severe headaches in Alberta and Ontario. Researchers reviewed nearly one million headacherelated emergency visits from 2010 to 2023 and found a 6% increase linked to fine particulate matter from wildfires. The study, published in JAMA, suggests smoky air may be one factor that precedes more serious headache episodes, though the authors and outside specialists note it shows an association rather than proof of direct cause. Doctors say the findings fit with what they are seeing as wildfire smoke continues to affect air quality across Canada. Health experts advise people who are sensitive to smoke to monitor local air quality, stay indoors when conditions are poor, use filtration where possible, and speak with a physician if migraine attacks become more frequent or severe.