Connecting the Dots Between Air Pollution and ALS in New Brunswick - with Daniel Saucier, PhD скачать в хорошем качестве

Connecting the Dots Between Air Pollution and ALS in New Brunswick - with Daniel Saucier, PhD

In this presentation to CAPE-ACME New Brunswick, Daniel Saucier, PhD, explained the results of an epidemiological study — the first of its kind in Canada — indicating that long-term air pollution exposure raises the risk of developing ALS (amyotrophic lateral sclerosis). Drawing on data from ALS patients and matched controls across New Brunswick, the research identified sulfur dioxide (SO₂) as a significant risk factor, with odds of an ALS diagnosis increasing substantially even at exposure levels more than four times lower than Canada's current air-quality threshold. The presentation covered the ALS clusters identified in communities like Bathurst and Edmundston; the broader health and economic burden of air pollution in Canada; and what these findings suggest for future policy and air quality standards. Daniel Saucier, PhD, is a postdoctoral researcher and adjunct professor at Centre de formation médicale du Nouveau-Brunswick. He holds a bachelor’s and master’s degree in biochemistry from the Université de Moncton, as well as a doctoral degree in the health sciences from the Université de Sherbrooke. Citation for the research presented: Saucier D, Bélanger M, Liu Z, Lavigne E, O'Connell C. Associations between long-term air pollution exposure and the development of amyotrophic lateral sclerosis: A matched case-control study. Environ Res. 2025 Nov 1;284:122232. doi: 10.1016/j.envres.2025.122232. Epub 2025 Jun 24. PMID: 40571082. »»»»»»»»»»»»»»»»»» JOIN CAPE-ACME NB: Interested in joining like-minded physicians and health advocates to protect the health of New Brunswickers and the natural environment? Sign up for updates to learn how you can protect health by protecting our planet: https://cape.ca/chapter/newbrunswick-... »»»»»»»»»»»»»»»»»» Chapters 0:00 - Introduction & Speaker Background 0:12 - Air Pollution as the Leading Global Disease Burden 1:10 - Health & Economic Costs of Air Pollution in Canada 2:10 - Cost to New Brunswick (~$1.4 Billion/year) 2:45 - WHO and Canadian Air Quality Standards 4:00 - What is ALS? Symptoms and Progression 5:21 - ALS in Canada: Prevalence and Survival 5:51 - Are ALS Rates Unusually High in New Brunswick? 6:43 - ALS Clusters in Bathurst and Edmundston 7:58 - What Causes ALS? The Complex Disease Model 9:04 - Patient Stories and Environmental Hypotheses 9:49 - Existing Research: Diesel, NO₂, and the Gap Around SO₂ 11:04 - Study Design: A Matched Case-Control Approach 11:33 - Data Sources: Stan Cassidy Centre & Medicare Records 12:35 - Methodology: Matching 304 Cases to 1,207 Controls 13:47 - The Big Reveal: Which Pollutant is Most Associated with ALS? 14:10 - SO₂ and ALS: A 4.4x Increased Odds Ratio 15:14 - Adjusting for Real-World Exposure Levels 15:38 - Sources of SO₂ in New Brunswick 16:04 - Dose-Response Relationship and Current Standards 17:09 - Biological Mechanisms: How SO₂ May Damage Motor Neurons 17:33 - Key Takeaway: Risk Persists Well Below "Safe" Thresholds 18:17 - Policy Recommendations 18:42 - Progress Since CEPA (2005–06) and Where We've Stalled 19:39 - Disclaimer, Data Acknowledgements & References #ALS #airpollution #environmentalhealth #newbrunswick #NBpoli