“…Substance abusers may also visit locations like shooting galleries, crack houses, and other environments that are breeding grounds for infectious diseases like tuberculosis (Kaushik, Kapila, & Praharaj, 2011; Leonhardt, Gentile, Gilbert, & Aiken, 1994; Singer, 2014; Story, Bothamley, & Hayward, 2008). Substance use also often leads to poor decision making with respect to sexual partners and safe sex practices, increasing the individual's risk of contracting HIV and other sexually transmitted infections (Brewer, Zhao, Metsch, Coltes, & Zenilman, 2007; Celentano, Latimore, & Mehta, 2008; Cheng et al, 2010; Kwiatkowski & Booth, 2000; Royce, Sena, Cates, & Cohen, 1997; Thamotharan, Grabowski, Stefano, & Fields, 2015). These are just a few examples of the lifestyle factors that increase substance abusers' susceptibility to a host of medical conditions.…”