I was watching a show about the mineral lead and it got me thinking: is there a positive correlation of Lead exposure and brain tumor occurrence?
I used to own a battery company in my 20's and 30's and while we employed some safety, I suspect i encountered more than the average amount of exposure. Used to smelt lead, do battery terminal repairs with torch, etc.
google found this '06 article linking lead exposure to increased brain cancers and mortality.
http://www.urmc.rochester.edu/news/story/index.cfm?id=1212
Probably nothing I could do about it now but it is interesting. Any others with high lead exposure?