Mortality and Morbidity Effects of Long-Term Exposure to Low-Level PM < sub > 2.5 < /sub > , BC, NO < sub > 2 < /sub > , and O < sub > 3 < /sub > : An Analysis of European Cohorts in the ELAPSE Project

CONCLUSIONS: Long-term exposure to PM2.5, NO2, and BC was positively associated with natural-cause and cause-specific mortality in the pooled cohort and the administrative cohorts. Associations were found well below current limit values and guidelines for PM2.5 and NO2. Associations tended to be supralinear, with steeper slopes at low exposures with no indication of a threshold. Two-pollutant models documented the importance of characterizing the ambient mixture with both NO2 and PM2.5. We mostly found negative associations with O3. In two-pollutant models with NO2, the negative associations with O3 were attenuated to essentially unity in the mortality analysis of the administrative cohorts and the incidence analyses in the pooled cohort. In the mortality analysis of the pooled cohort, significant negative associations with O3 remained in two-pollutant models.Long-term exposure to PM2.5, NO2, and BC was also positively associated with morbidity outcomes in the pooled cohort. For stroke, asthma, and COPD, positive associations were found for PM2.5, NO2, and BC. For acute coronary heart disease, an increased HR was observed for NO2. For lung cancer, an increased HR was found only for PM2.5. Associations mostly showed steeper slopes at low exposures with no indication of a threshold.PMID:36106702

Source: Cancer Control - September 15, 2022 Category: Cancer & Oncology Authors: Brunekreef Bert Strak Maciej Chen Jie J Andersen Zorana Atkinson Richard Bauwelinck Mariska Bellander Tom Boutron Marie-Christine Brandt J ørgen Carey Iain Cesaroni Giulia Forastiere Francesco Fecht Daniela Gulliver John Hertel Ole Hoffmann Barbara de Ho Source Type: research