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Traffic noise exposure in relation to adverse birth outcomes and body mass between birth and adolescence

Journal article
Authors A. Wallas
S. Ekström
A. Bergström
C. Eriksson
O. Gruzieva
M. Sjöström
A. Pyko
Mikael Ögren
M. Bottai
G. Pershagen
Published in Environmental Research
Volume 169
Pages 362-367
ISSN 00139351 (ISSN)
Publication year 2019
Published at Institute of Medicine, Department of Public Health and Community Medicine, Section of Occupational and environmental medicine
Pages 362-367
Language en
Links dx.doi.org/10.1016/j.envres.2018.11...
Keywords Birth outcome, Body Mass Index, Childhood, Noise, Road traffic
Subject categories Environmental medicine

Abstract

Background: There is growing evidence that traffic noise exposure is associated with adiposity among adults but data in children are limited. Objective: This longitudinal study examined whether pre- and postnatal noise exposure is associated with body mass index (BMI) between birth and adolescence or with adverse birth outcomes. Methods: The study was conducted using data from the BAMSE birth cohort, which included 4089 children born in Stockholm County, Sweden. Data on BMI from birth to adolescence were collected via questionnaires, clinical examinations and health care records. A national register provided information on birth outcomes. Road traffic noise levels at the most exposed façade were estimated for all residences of the children during follow-up, as well as of their mothers during pregnancy, and time-weighted average exposure was calculated for different time windows. Maternal occupational noise exposure was obtained from a job-exposure-matrix. Logistic- and quantile regression models were used to estimate associations between noise exposure and health outcomes. Results: We found residential road traffic noise exposure to be associated with increases in BMI from school age to adolescence, but not at earlier ages. In the age groups 8–11 years and 12–16 years the BMI increments were 0.11 kg/m2 per 10 dB Lden (95% CI 0.08–0.13) and 0.20 kg/m2 per 10 dB Lden (95% CI 0.17–0.22), respectively. Maternal noise exposure during pregnancy was generally unrelated to adverse birth outcomes and BMI from birth to adolescence in the children, however, traffic noise exposure was associated with a decreased risk of preterm birth Conclusion: Residential road traffic noise exposure was associated with BMI increases from school age to adolescence, but not at earlier ages. Maternal occupational noise exposure or exposure from road traffic during pregnancy were not consistently related to birth outcomes or BMI from birth to adolescence. © 2018 The Authors

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