Worry more, age more (worry less, get less done, look the same)

The WashPost reports on a study that demonstrates the relationship between long-term stress and aging. If there is a definite causal relationship, does it follow that a stress-free lifestyle puts you ahead of the pack in terms of reducing physical manifestations of old age? My guess is that it does not. However, I would be willing to offer myself up for study, since I have perfected the art of blocking to such a degree that I can actually be writing emails or a taking a splendid walk outside and remain completely oblivious to the work deadlines, household management issues, etc., that are pounding at the door trying to force me to take seriously their presence.