Although not really related to the practice of domestic relations law, I read an article in the Philadelphia Inquirer on March 21, 2008 that reported on a study conducted with respect to the effect of a good marriage on blood pressure. The results were that happily married people had the lowest blood pressure, followed by single people. However, those in a stressful marriage brought up the rear. It was not a huge study (204 married people and 99 single adults), but interesting nonetheless.
Click here to read the full article in the Philadelphia Inquirer.