In 1983, a claim was made that ulcers were caused by bacterial infection. This paper is from 1997, analyzing the rejection and then growing acceptance of the theory: http://cogsci.uwaterloo.ca/Articles/Pages/Ulcers.one.html If interested enough, the second part is available by replacing "one," above, with "two."
It may be of interest, I don't know. I have no reason to believe nuclear physicists are fundamentally different than medical doctors and biologists.