We started the millennium with a stock market crash, 9/11, the Concord crashed, the Space Shuttle broke up on reentry, two wars kicked off and just when things started calming down... the Great Recession. If you weren't laid off then you probably knew a few people that were. It seemed like everything we had built over the past two decades was failing us all at once.
The 90's seemed like a time when you just watched Seinfeld on Thursday nights and watched your stocks go up in value. The 2000's and on have been a bit more stressful.
The abstract for the paper says This increase for whites was largely accounted for by increasing death rates from drug and alcohol poisonings, suicide, and chronic liver diseases and cirrhosis.
( http://www.pnas.org/content/early/2015/10/29/1518393112.abst... )
So strokes probably don't explain it.
In a previous discussion I speculated that military service (and thus combat) could be a contributing factor. It would be interesting to see how many of the suicides and overdoses were people who had experienced combat.
If this is supposed to be sarcasm, I'm missing it.
The article details the increasing causes of mortality in this group.