“…Besides increasing mortality and morbidity (WHO, ), drug use is associated with an increased risk of mental disorder (Anglin, Burke, Perrochet, Stamper, & Dawud‐Noursi, ; Grella & Lovinger, ; Han, Gfroerer, & Colliver, ; Sherman et al, ). The form of mental illness most commonly associated with (any form of) drug use is depression (Celentano et al, ; Ford et al, ; Latkin, Davey‐Rothwell, Yang, & Crawford, ; Lev‐Ran et al, ; Marshall, & Werb, ; Reissner et al, ; Rounsaville, ). Depression is one of the major contributors to the global burden of disease (Lev‐Ran et al, ; Moussavi et al, ; Ustün, Ayuso‐Mateos, Chatterji, Mathers, & Murray, ).…”