Stress "may speed up cell ageing"

Found this today on the BBC's website. The University of California is obviously one of those that commissions research into the bleeding obvious.

However, for any skeptics out there, can I furnish you with some conclusive evidence of my own? Before teaching = 17 grey hairs; after seven years teaching = approximately 12 457 and counting (I swear I felt another couple sprouting up after second year this afternoon).

I rest my case...