Children, adolescents and young adults consume entertainment from a variety of sources that are accessible 24 hours a day, are mobile, and offer passive, as well as more active engagement. Many of these media platforms feature entertainment that contains significant doses of violence, and portrays sexual and interpersonal aggression. Multiple studies have shown a strong association, and suspicion or suggestion of causality between exposure to violence in the media, and aggressive or violent behavior in viewers. This is a serious public health issue that should concern all family physicians.
Much of the research on media and violence derives from the United States, particularly the related research fields of psychology and media/communication studies. Research in Europe and Australia on the relationship between media and violence is far broader and is much more clearly embedded in politics, culture and social relationships.  Jeff Lewis ' book Media Culture and Human Violence challenges the conventional approaches to media violence research.  Lewis argues that violence is largely generated through the interaction of social processes and modes of thinking which are constantly refreshed through the media, politics and other cultural discourses. Violence is continually presented as 'authorised' or 'legitimate' within government, legal and narrative media texts. Accordingly, Lewis disputes with the proposition that violence is 'natural' or that violence is caused by media of any sort. Rather, media interacts with culturally generated and inherited modes of thinking or 'consciousness' to create the conditions in which violence can occur. These forms of 'violence thinking' are embedded in historically rooted processes of hierarchical social organisation. These hierarchical organisational systems shape our knowledge and beliefs, creating a ferment in which violence is normalised and authorised by governments and other powerful institutions. The link between violence and the media is therefore very complex, but exists within the normative framework of modern culture. According to Lewis, in fact, humans in the advanced world are the most violent beings of all times.