With so much evidence establishing a link between marital stress and health, a new generation of research is set to explore the ways in which couples can mitigate the damaging effects of relationship stress. The Glasers are now conducting studies testing whether regular supplements of fish oil, rich in omega-3 fatty acids, can mitigate some of the physical symptoms of stress on the immune system.
The couple are also embarking on a new study looking at the interplay between nutrition and marital stress. Earlier research at Ohio State showed that when study subjects were given intravenous fat injections during times of stress, it took longer for triglycerides, fats that are associated with heart disease, to leave the bloodstream. But Kiecolt-Glaser is more interested in the real-world equivalent of the study: What happens to the body’s ability to cope with fats when couples fight at dinnertime? To find out, she’s planning to feed married couples two types of meals ”” one relatively healthful meal and one high-fat meal equivalent to fast food. During the meal the couples will be asked to discuss topics of high stress, and a blood analysis will offer a glimpse of the effect that mealtime conflict has on the body’s ability to metabolize fats. “It’s an ideal way,” Kiecolt-Glaser says, “to look at what happens to couples in the real world, where so many family conflicts happen over a meal.”
For the Glasers, their nearly 30 years of professional collaboration have not only given them new insights into the role of stress and health but have also helped them in their own marriage. Like every married couple, they have their disagreements, Glaser told me. But years of watching married couples interact and measuring the subsequent physical toll that conflict takes on their bodies has taught the Glasers the importance of taking time off together and making sure their disagreements don’t degenerate into personal attacks. “Don’t fight dirty,” he advised. “You never go far enough down the road where you hurt each other. We know enough to avoid those kinds of arguments.”
Kiecolt-Glaser added that the couple’s research shows that some level of relationship stress is inevitable in even the happiest marriages. The important thing, she said, is to use those moments of stress as an opportunity to repair the relationship rather than to damage it. “It can be so uncomfortable, even in the best marriages, to have an ongoing disagreement,” she said. “It’s the pit-in-your-stomach kind of thing. But when your marital relationship is the key relationship in your life, a disagreement is really a signal to try to fix something.”