Health Information Sharing via Social Network Sites (SNSs): Integrating Social Support and Socioemotional Selectivity Theory.

Despite its prevalence, research on health information sharing via social network sites (SNSs) is mostly descriptive and often lacks a coherent theoretical framework. By integrating social support and socioemotional selectivity theory, the present study takes a uses and gratifications approach to examining what factors affected health information sharing via WeChat, the most widely used SNS in China. Results of an online survey (N = 519) show that emotional and informational support provisions both predicted health information sharing via WeChat. In addition, age moderated the effects of both support provision. While the relationship between emotional support provision and health information sharing was stronger among older adults, the effect of informational support provision was marginally significantly stronger among younger adults. These findings provide additional understanding of health information sharing via SNSs by revealing its emotional meaning and demonstrating different sharing motivations in different age groups, which offers implications on health information design, dissemination, and discussions in different groups.