“…Other factors that have been hypothesized to be altered after one or more of these procedures include prandial secretion of cholecystokinin (Jacobsen et al, 2012; Peterli et al, 2012), glucose inhibitory peptide (Lee et al, 2013; Romero et al, 2012), glucagon (Romero et al, 2012), GLP-2 (Jacobsen et al, 2012; Romero et al, 2012), peptide YY (Dimitriadis et al, 2013; Peterli et al, 2009), and perhaps others (Dimitriadis et al, 2013; Santoro et al, 2008). Determining the relative contribution of these different factors to surgical benefits on glucose tolerance and weight loss remains an important research goal.…”