“…The previous investigations showed a great share of obesity and lifestyle factors such as diet, cigarette smoking, alcohol consumption, and physical inactivity, in individual's susceptibility to CRC (Giovannucci, 2001;Chapelle, 2004). The effect of these etiological factors on the risk of CRC mediated through the insulin (INS) pathway (Giovannucci, 1995;Lee et al, 2013). Various studies have linked diabetes and CRC risk (Yang et al, 2004;Nagel et al, 2006;Chung et al, 2008).…”