GCG and Hyperglycemia: GLP‐1 is released from the neuroendocrine L cells of the gut in response to intake of macro‐nutrients (Elliott et al., 1993), limiting postprandial hyperglycaemia via enhancing β‐cell insulin secretion, suppressing α‐cell glucagon and delaying gastric emptying (Holst, Vilsbøll, & Deacon, 2009; Kreymann, Williams, Ghatei, & Bloom, 1987; Willms et al., 1996).