Traffic and Weight (08-20-20)

Cai and associates investigated links between hearing road noise and obesity; their findings indicate the value of carefully managing the soundscapes in buildings near roads.  The researchers determined, using data from nearly 500,000 adults in three European regions, that “Environmental stressors such as transport noise may contribute to development of obesity through increased levels of stress hormones, sleep deprivation and endocrine disruption. . . . .The main analyses included 412,934 participants of UK Biobank, 61,032 of Lifelines [the Netherlands] and 30,305 of HUNT3 [Norway], with a mean age of 43–56 years and Lden [residential 24-hour road traffic noise] ranging 42–89 dB(A) across cohorts. In UK Biobank, per 10 dB(A) higher of Lden: BMI was higher by 0.14kg/m2 . . . waist circumference higher by 0.27 cm. . . . Associations were more pronounced among women, those with low physical activity, higher household income or hearing impairment. In HUNT3, associations were observed for obesity . . . among those exposed to Lden greater than 55 dB(A). In contrast, no or negative associations were observed in the Lifelines cohort.”

Yutong Cai, Wilma Zijlema, Elin Sorgjerd, Dany Doiron, Kees de Hoogh, Susan Hodgson, Bruce Wolffenbuttel, John Gulliver, Anna Hansell, Mark Nieuwenhuijsen, Kazem Rohimi, and Kirsti Kvaloy.  “Impact of Road Traffic Noise on Obesity Measures:  Observational Study of Three European Cohorts.”  Environmental Research, in press,