This podcast discusses infection of the stomach from a common bug that can lead to ulcer disease, lymphoma and stomach cancer. The bug is called Helicobacter pylori. Dr. David Graham wrote the book on H. pylori and is the world's foremost authority on this bug what it can do, how to find it and reliably eradicate it. He will also discuss who is at increased risk of getting this infection. He is the inventor of the breath test that can reliably and noninvasively diagnose the infection. Dr. David Graham became professor of medicine, molecular biology and virology in 1983 and since then has published over 1000 scientific articles and 125 book chapters. His wisdom and knowledge on this topic has made this podcast worthwhile. Dr Barry Marshall was awarded the Nobel Prize in Physiology or Medicine after his work on H. pylori infection.