Hi everyone, I'm trying to understand something about my FIL's diagnosis and I keep reading conflicting info online. His doctor mentioned he was exposed at work back in the 70s and 80s but we don't have exact details on how much or for how long.
I guess what I'm really asking is - is there like a threshold? Like does it take years of heavy exposure or can even smaller amounts cause it? I've read some sources saying it's cumulative and others that suggest even brief exposure can be dangerous, which honestly just stresses me out more.
He's stage IV so we're past the "why did this happen" phase, but I'm trying to understand the timeline and also just... I don't know, make sense of it all? Has anyone else dealt with this question when trying to piece together their family member's work history?
Thanks in advance. Still new to all this and trying to educate myself before we meet with his oncologist next week.