IL6 and metabolic syndrome: Increased IL-6 plasma levels were correlated with metabolic syndrome (Bastard et al., 2000; Glund and Krook, 2008; Kern et al., 2001; Mohamed-Ali et al., 1997), but the involvement of IL-6 in the molecular mechanisms underlying the metabolic syndrome effects is not fully understood (Matthews et al., 2010; Nieto-Vazquez et al., 2008; Senn et al., 2002).