"Persuasive, impassioned. . . hopeful news [for those] suffering from functional bowel disease." — New York Times Book ReviewDr. Michael Gershon's groundbreaking book fills the gap between what you need to know—and what your doctor has time to tell you.Dr. Michael Gershon has devoted his career to understanding the human bowel (the stomach, esophagus, small intestine, and colon). His thirty years of research have led to an extraord...