I dislike the linear damage model, and think that hormesis is real, at least in mice!
And if not, it’s at least comforting to think about while surrounded by yellow-and-magenta signs with that purple beacon just waiting.
The guy in charge of radiation safety at Woods Hole told me that there were very few things they had there that would actually do some real damage to you. I think P-35 was one of them (maybe I-125 and some form of radioactive Fe). He said that even in a worst case scenario there wasn’t a lot of actual danger even though the regulations for handling all the stuff made it seem like there was.