Fig. 4: MR leave-one-out sensitivity analysis was performed to assess the influence of each individual SNP on the association between air pollutants and mental disorders.

A PM2.5 on depression; B PM2.5 on anxiety disorder; C PM2.5 on schizophrenia; D PM2.5 on bipolar disorder; E NO2 on schizophrenia; F NO2 on bipolar disorder; G NOx on anxiety disorder; H NOx on schizophrenia. SNP single nucleotide polymorphism, PM particulate matter, NO2 nitrogen dioxide, NOx nitrogen oxide, MR Mendelian randomization.