“…Focus on loneliness has increased in the public health field as studies have uncovered loneliness as an important, often unaddressed correlate of increased morbidity, early mortality, and poor health behaviors (Cacioppo & Cacioppo, 2014; Cacioppo & Hawkley, 2003; Hawkley & Cacioppo, 2003; Noreen E. Mahon, Yarcheski, & Yarcheski, 1998; Perissinotto, Cenzer, & Covinsky, 2012). Mixed findings have been reported regarding the association between loneliness and smoking: some researchers have found that loneliness is associated with smoking, (Christopherson & Conner, 2012; Peltzer, 2009) yet others fail to find an association (Cacioppo et al, 2002; Grunbaum, Tortolero, Weller, & Gingiss, 2000). This review intends to clarify what is currently known about the association between loneliness and smoking, identify gaps in knowledge and evidence, and suggest future research directions.…”