Gastroparesis is a disease caused by delayed gastric emptying (GE), affecting about 10 million people in the United States. Diabetic and postoperative gastroparesis are complementary disorders, but the majority of patients with gastroparesis have no identifiable etiology and are considered idiopathic. Although post-infectious causes have been implicated in idiopathic gastroparesis, the pathophysiology of idiopathic gastroparesis remains unclear.