Road Traffic and Railway Noise Exposures and Adiposity in Adults: A Cross-Sectional Analysis of the Danish Diet, Cancer, and Health Cohort

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BACKGROUND: Traffic noise has been associated with cardiovascular 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 between residential traffic and railway noise and adiposity.

METHODS: In this cross-sectional study of 57,053 middle-aged people height, weight, waist circumference and bioelectrical 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 exposure was calculated using the Nordic prediction method. Associations between traffic noise and anthropometric measures at enrolment were analyzed 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 0.35 cm wider waist circumference (95% CI: 0.21, 0.50) and a 0.18 points higher BMI (95% CI: 0.12, 0.23) per 10 dB. 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 0.71 cm 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 (0-20 dB).

CONCLUSIONS: The present study finds positive associations between residential exposure to road traffic and railway noise and adiposity.

TidsskriftEnvironmental Health Perspectives
Sider (fra-til)329-35
Antal sider7
StatusUdgivet - mar. 2016

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