Since I'm not a native speaker could you explain me this sentence of your statement, because I don't blame anyone just I think that the treatment has exerted his 0.5 cents in the man condition and I do not claim that before he was completely healthy. Beside as user above me wrote if there was any spider bite (still not huge fan mode: on)
I'm not a native speaker too so I was explaining myself badly.
What I meant was that not all lung cancer cases happen because of smoking, as well as any other disease. It just happens. Maybe more possible in some conditions but still, we don't know what happened and it's just speculation.
All treatments are really powerful, and it's really common to cause serious side effects, even worse if they're being taken for a long time.
@Jind: I know what you said, we all know he was a heavy drinker ( he also said so I think), but still. Jeff's or any other, we can't really find a cause, deaths like this are just a sum of several failures together.
Maybe his liver was weak, got a little infection ( like the spider bite), and the rest of his body started to fall apart. Seen deaths like that in friends, family, etc. Maybe all they got was just a cold and ended up in death.
All I wanted to say before and now is that finding the cause now and blaming the guy ( not you jind) is a little bit over the top.
He's death and that's all. May he rest in peace.