Research published in the ASPS medical journal, says that divorce can add two years to the age you look.
(Researchers examined 186 pairs of identical twins and found that twins who had been divorced looked nearly two years older than their identical siblings who were married, widowed or single. I wonder how many years it's added to Zsa Zsa Gabor? But then I guess anyone who can come up with the line, "I'm an excellent housekeeper. Every time I get a divorce, I keep the house,” didn't find the process that stressful.)