This week's episode comes with a warning: don't attempt this at home. While self-experimentation has led to many a scientific breakthrough, we're definitely not advocating it. But it happened to work out for the best for Barry Marshall and Robin Warren, even earning them a Nobel prize. That’s right folks, today we’re talking about none other than Helicobacter pylori, the curvy little bacterium identified only a few decades ago to be a causative agent of peptic ulcer disease, a major risk factor in the development of gastric cancer, and a fierce warrior who can survive the harshest of environments: your stomach.