Hypergastrinemia and increased gastric acid production, due to decreased hepatic clearance of gastrin and/or increased gastrin release stimulated by elevated serum bile acid (BA) concentrations, abnormal blood flow, hypoprostaglandinemia, poor mucosal integrity, and abnormal mucus production have been proposed as possible mechanisms for GI hemorrhage [3]. Here, GAST is linked to Gastrointestinal hemorrhage.