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Road traffic noise and cardiovascular health

Road traffic noise and cardiovascular health. Dr. Mette Sørensen , Senior Researcher Environment and Cancer, Danish Cancer Society. Quiet please, Brussels, May2011. Direct effects of noise. Stress response Stress hormone (adrenalin, cortisol ) Blood pressure Heart rate

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Road traffic noise and cardiovascular health

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  1. Road traffic noise and cardiovascular health Dr. MetteSørensen, Senior Researcher Environment and Cancer, Danish Cancer Society Quiet please, Brussels, May2011

  2. Direct effects of noise • Stress response • Stress hormone (adrenalin, cortisol) • Blood pressure • Heart rate • Sleep disturbances • Conscious: difficulties falling asleep, wakes up earlier or during night, sleeping medication • Unconscious: changes in sleep stages, body movements during sleep, blood pressure, heart rate, morning cortisol Quiet please, Brussels, May2011

  3. Chronic effects of noise • Babisch 2006 Babisch 2008 • Based on 61 studies • Hypertension in adults • Myocardial Infarction (MI) Quiet please, Brussels, May2011

  4. Stroke • Many risk factors in common with MI and hypertension • Ischemic or hemorrhagic event in the brain • According to WHO, 15 million people suffer stroke worldwide each year • 3. most common cause of death • About half suffers from permanent disability Quiet please, Brussels, May2011

  5. Noise and stroke • Diet, Cancer and Health cohort • 57 000 participant (elderly) • 50-64 years in 1993-1997 (enrolment) • Questionnaire: smoking, alcohol, BMI, education • Unique Danish registers • All addresses from 1993-2006 (in total 61 873) • Follow-up for stroke (1881 cases) Quiet please, Brussels, May2011

  6. Noise and stroke, exposure • SoundPLAN – the Nordic Prediction Model • Geographical coordinates for each address • Height (floor) for each address • Building polygons • For all road lines • Traffic composition • Yearly average daily traffic • Traffic speed • AirGIS - dispersion model (regional, urban, street) Quiet please, Brussels, May2011

  7. SoundPLAN Quiet please, Brussels, May2011

  8. Road noise at enrolment Limit value 58 dB Quiet please, Brussels, May2011

  9. Results, all Adjusted forsmoking, fruit, vegetables, coffee, alcohol, BMI, physical activity, education, municipality income, noise from railways and airports and air pollution

  10. Results, 50-65 years Lden (dB), participants below 65 years Quiet please, Brussels, May2011

  11. Results, > 65 years Lden (dB), participants above 65 years Quiet please, Brussels, May2011

  12. How many extra strokes? • 5.5 mill inhabitants • 12 400 new strokes each year • Exposure distribution of all dwellings in Denmark • 600 strokes each year due to road traffic noise • Corresponding to 5 % of all strokes Quiet please, Brussels, May2011

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