Stress of any kind can be "proven" to shorten your life.
But how can you prove anything unless you have an identical control?
It's not possible with people and social studies.
So all you are left with is theories, and thesis.
Not that it is the same thing, but if you are playing the stress card, I'll paying devil's advocate: Paying bills, taxes, and going to work stress me out, should I stop doing them too because science says I will die sooner?