“…Social networks have the potential to influence health behaviors and outcomes through social comparison, social sanctions and rewards, information transmission, support and resources, stress reduction, and socialization [ 24 – 29 ]. A large and growing body of research demonstrates both the positive and negative influences of social network on the lives of homeless individuals [ 30 – 32 ], including their health and health-related behaviors [ 7 , 9 , 33 , 34 ]. For example, social networks are an important source of social support and thus may influence (positively or negatively) AOD use, HIV risk behavior, AOD treatment program participation, and successful transition out of homelessness [ 6 – 8 , 17 , 33 – 39 ].…”