string: …in a subset of alcoholics (Chen et al., 2004; McElroy et al., 2009; Mistlberger and Nadeau, 1992; Rosenwasser et al., 2005a,b; Seggio et al., 2009; Spanagel et al., 2005a); and (vi) The Clock gene is important for the circadian regulation of macronutrient absorption by enterocytes in the gut…