The fact that the cause of his IM is H. Pylori is actually a good thing because the virus can be treated. With proper medications and the right diet I've read where IM can be reversed in some people. I have IM with no known history of H.Pylori. That can be a bit more concerning because the cause of my IM is not really known. My doc explained to me that the chances of IM actually transitioning into cancer is extremely small and he told me to live my life. Once his H.pylori is irradicated, it's not that he can NEVER have mexican food etc.... He just needs to be mindful and only have it once in a while. That book will help him a lot. Great recipes too. I'm on it and I don't feel deprived at all. I eat what's on the Acid Watchers Diet mostly through the week and on Saturday nights I eat what I want within reason. He does need to keep stress down as much as possible. Our stomachs react to stress via secretion of stomach acid more than most anything else. I wish him a quick healing for his H.Pylori.