Impact of environmental risk factors such as noise and air pollution on mental health: What do we know?

An increasing number of studies underlines the role of noise and air pollution as important environmental risk factors. It is unclear, how noise and air pollution impact mental health. Current study results indicate that environmental noise (in particular traffic noise) and various components of air pollution (in particular particulate matter) can increase the risk of mental disorders such as depression, anxiety disorders, psychoses and suicide. Pathophysiological mechanisms include both biological (such as oxidative stress and inflammation) and psychosocial factors (such as mental stress). Environmental risk factors such as noise and air pollution can have a significant impact on mental health. Due to the partly heterogeneous study results and the limited availability of methodically high-quality longitudinal studies, further studies are absolutely necessary, which allow deeper insights into these relationships.