Access to the internet has increased rapidly over the last 20 years; und seeking health information on the Internet or sharing health issues on social media now is one of the most preferred online activities by adults in western societies (PEW 2013; Eurostat 2020). However, even today, not everybody has access to and uses the internet and social media, and there still exist various inequalities in access, uses, competence and effects of online health information. This contribution first gives an overview of the digital divide concept as theoretical perspective and in application to health communication. In addition it is illustrated with data namely from empirical studies realized in Switzerland, Germany and Europe (e.g. the Eurobarometer Surveys).