G6PC1 and type 2 diabetes mellitus: The results further prove that a GABA-rich adzuki bean diet could inhibit glycogen decomposition, the gluconeogenesis rate-limiting enzyme G-6-Pase, and PEPCK activities in T2DM mice, suggesting that it promotes the glycolysis pathway in reverse and then regulates blood glucose concentration in T2DM mice and alleviates hyperglycemia symptoms in mice.