“…Stress and depression have long been recognized as risk factors for substance use (Conway et al, 1981;Elder et al, 2000;Holahan, Moos, Holahan, Cronkite, and Randall, 2003;Khlat, Sermet, and Le Pape, 2004;Torikka, Kaltiala-Heino, Rimpela, Rimpela, and Rantanen, 2001). Migration itself is stressful (He et al, 1991;Landale and Oropesa, 2001); the poor working and living conditions may augment the stress perceived by these rural-to-urban migrants, leading to elevated levels of depression and substance use (Conway et al, 1981;Elder et al, 2000;Holahan et al, 2003;Khlat et al, 2004;Torikka et al, 2001;VanGeest and Johnson, 1997). The income of these migrants, although limited in most cases, may still be sufficient to allow access to substances.…”