Invited commentary: Assessment of air pollution and suicide risk

Abstract

Suicide is a serious public health issue worldwide, with multiple risk factors, such as severe mental illness, alcohol abuse, a painful loss, exposure to violence, or social isolation. Environmental factors, particularly chemical and meteorological variables, have been examined as risk factors for suicide, but less evidence is available on whether air pollution is related to suicide. In this issue of the Journal, Bakian et al. ( publish findings from a study that found a short-term increased risk of suicide associated with increased air pollution. This study bolsters a small body of research linking air pollution exposure to suicide risk. If the association between air pollution and suicide is confirmed, it would broaden the scope of the already large disease burden associated with air pollution.

Keywords: air pollution; case-crossover studies; confounding; exposure measurement; measurement error; selection bias; suicide.