What is eHealth Literacy

Increasing prevalence of chronic diseases and ageing population necessitate access to accurate health information for better health. The internet and social media affect and transform the communication of health-related information. Online platforms are enabling patients and patient groups to find common ground to discuss their health and diseases. Focusing on disease/patient group sites, this chapter investigates these sites through analyzing their features, inclusion of social and economic determinants of health in their contents, and level of critical health literacy calling for decision and action. Furthermore, these sites and their organization structures are analyzed by netnography. The findings show that disease/patient sites on Facebook are highly benefitted as an information and experience sharing platform. However, the critical health literacy level of the contents is quite low. Therefore, the role of social media as an improvement area for critical health literacy in health communication is getting more important.