Wow, that's an interesting read! Until I suspected that I had H. Pylori, I believed peptic ulcers were mostly due to stress (apparently I missed the popular consensus memo). After I found out the more common view, I realized that I was still confused; the dismissal of stress given the bacteria seemed unmotivated, given its role in enabling many other diseases. (Turns out, for me, it was stress all along, but probably no ulcers!) Thanks for the article.