Noise can trigger the sympathetic nervous system, resulting in the release of stress hormones. Research has linked nighttime noise, in particular, to sleep disturbance, impaired cognitive performance, hypertension, type 2 diabetes, and adverse birth outcomes. No one has described the burden of environmental noise in the U.S. since the 1980s. In a new study, we found substantial differences in noise exposure along racial and socioeconomic lines nationwide.
Joan Casey received her doctoral degree from the department of environmental health sciences at Johns Hopkins Bloomberg School of Public Health in 2014. Her research focuses on using electronic health records and spatial statistics to study the relationship between emerging environmental exposures and population health. Casey has an interest in a range of exposures including unconventional natural gas and oil development, environmental noise pollution, and concentrated animal feeding operations.