Jeppe Schultz Christensen1, Ole Raaschou-Nielsen1, Anne Tjønneland1, Kim Overvad2,3, Rikke B. Nordsborg1, Matthias Ketzel4, Thorkild IA Sørensen5, and Mette Sørensen1
Author affiliations open
(1) Diet, Genes and Environment, Danish Cancer Society Research Center, Copenhagen, Denmark; (2) Department of Public Health, Section for Epidemiology, Aarhus University, Aarhus, Denmark;
(3) Department of Cardiology, Aalborg University Hospital, Aalborg, Denmark;
(4) Department of Environmental Science, Aarhus University, Roskilde, Denmark;
(5) Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Institute of Preventive Medicine, Bispebjerg and Frederiksberg Hospitals, The Capital Region, Copenhagen, Denmark and MRC Integrative Epidemiology Unit, Bristol University, Bristol, U.K. PDF Version (490 KB)
Abstract about this article supplemental material
Background: Traffic noise has been associated with car-diovascular and metabolic disorders. Potential modes of action are through stress and sleep disturbance, which may lead to endocrine dysregulation and overweight.
Objectives: We aimed to investigate the relationship bet-ween residential traffic and railway noise and adiposity.
Methods: In this cross-sectional study of 57,053 middle-aged people height, weight, waist circumference and bio-electrical impedance were measured at enrolment (1993-1997). Body mass index (BMI), body fat mass index (BFMI) and lean body mass index (LBMI) were calculated.
Residential exposure to road and railway traffic noise ex-posure was calculated using the Nordic prediction method. Associations between traffic noise and anthropometric measures at enrolment were analysed using general linear models and logistic regression adjusted for demographic and lifestyle factors.
Results: Linear regression models adjusted for age, sex and socioeconomic factors showed that five year mean road traffic noise exposure preceding enrolment was associated with a 0.35cm wider waist circumference (95% CI: 0.21, 0.50) and a 0.18 points higher BMI (95%
CI: 0.12, 0.23) per 10dB. Small, significant increases were also found for BFMI and LBMI. All associations followed linear exposure-response relationships. Exposure to railway noise was not linearly associated with adiposity measures. However, exposure above 60 dB
was associated with a 0.71cm wider waist circumference (95% CI: 0.23, 1.19) and a 0.19 point higher BMI (95% CI: 0.0072, 0.37) compared to unexposed (0-20dB).
Conclusions: The present study finds positive associations between residential exposure to road traffic and railway noise and adiposity.
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