These men have been lied to, betrayed, sold down the river. They subconsciously know how, why, and by who, but can't quite manage to admit it to themselves. But deep down, they know, and its tearing them apart. These deaths are not environmental, there's a strong psychological component.

Some only survive by focussing their hatred on scapegoats, and indulging in conspiracy theories, apocalyptic religions or by following demagogues. We've seen the rage, and the denials, right here on the Zone. Or they take their guns and rush out seeking their vengeance on complete strangers. SF writer John Brunner predicted this decades ago, he called them "muckers" (Stand on Zanzibar).

check this out...these are self-inflicted deaths.

https://cdn.theatlantic.com/assets/media/img/posts/2015/11/Screen_Shot_2015_11_03_at_12.01.18_PM/955d93216.png0