Romantic relationships can fill you with happiness, but these same relationships can also be a significant source of stress in daily life. The results of a new study, recently published in the Archives of Internal Medicine, suggest that relationship difficulties can quite literally break your heart.

In examining data from a long-term cohort study of British civil servants, the authors find that negative interactions in close relationships increase risk for incident coronary heart disease. This relationship exists even when controlling for sociodemographic characteristics, biological and psychosocial factors, and health-related behaviors. The results suggest that negative interactions are more likely to occur in women and lower-income civil servants; however, negative interactions produce similar effects on heart disease regardless of sex or social position.

Does this interaction seem to you like a human universal, a product of our shared evolutionary heritage? Or is this more likely the product of Western society? In light of your recent readings on the interaction of stress, human biology, and culture, how might we examine Western notions of romantic love and the meaning of negative interactions in a cross-cultural comparison to explore these questions?