Food allergies are becoming increasingly common. Such allergies are often not easy to diagnose, and can present differently in adults and children. What is the difference between a food allergy and a specific food intolerance? What causes food allergies, and are there effective treatments beyond avoidance? Host Dr. Jay Goldstein probes the truth about food allergies with Dr. Sheila Crowe, professor of medicine in the division of gastroenterology and hepatology at the University of Virginia.