↑ GLP-1 after V-meal vs. M-meal in T2D men and H men↑ PYY after V-meal vs. M-meal in H men (18.9%)↑ Amylin after V-meal vs. M-meal in all men (T2D: 15.7%; O: 11.5%; H: 13.8%)↑ Satiety after V-meal vs. M-meal (T2D:9%; O:18.7%; H:25%). This evidence concerns the gene GCG and type 2 diabetes mellitus.