Helicobacter pylori, often known as H. pylori, was discovered in the 1980s and is found worldwide in the stomachs of billions of people. H. pylori can cause gastritis and ulcers, but often presents no symptoms or problems for years. How concerned should we be about the stomach bacterium? Host Dr. Jay Goldstein discusses with Dr. David Peura, professor of medicine at the University of Virginia School of Medicine, the extent to which H. pylori is still a health problem in the United States.