Steptoe and Roux comment on two studies by Fowler and Christakis, and Cohen-Cole and Fletcher that relate to the transmission of health related factors through social networks. They argue that Fowler and Christakis' suggestion that happiness is transmitted through social connections could indirectly contribute to the social transmission of health. Likewise, Cohen-Cole and Fletcher discover that many of the characteristics of social bonds, especially friendship bonds, have been shown to be related to health outcomes and psychological states. Moreover, Steptoe and Roux indicate that the work by Fowler and Christakis is groundbreaking in positing the intriguing hypothesis that some psychosocial determinants of health could be transmitted through social connections.