Media violence has been taken up as a public policy issue by a number of Western countries. Central to the debate has been the challenge of accommodating what may appear to be opposing principles—the protection of children from unsuitable media content and upholding the right to freedom of expression.
There’s significant evidence that media education can counter unrealistic media representations of men’s and women’s bodies. For example, a 2010 study found that showing the video Evolution (which was created by Dove to show how media images of women are manipulated) significantly reduced negative effects on confidence and body satisfaction of young girls when they looked at pictures of ultra-thin models afterwards.
Music is one of the most popular and powerful forms of media that kids and teens consume: more than half of Canadian teens say they would die without it, and nearly all consider it very important to their lives. 
The video game sector is the fastest growing entertainment industry and second only to music in profitability. Global sales of video game software hit almost $17 billion U.S. in 2011. 
Pushing the boundaries for artistic expression has always been a part of popular music. However, the drive for profits may also be pushing the envelope of what is acceptable. In this section we examine some of the issues in today’s music.
Music is a significant medium in a young person’s life, particularly during the teenage years. While other media may occupy a greater number of hours, it is most often from music that teenagers define their identities and draw cues about how to dress and to behave.
Despite the popularity of the Internet, movies and TV still dominate young people’s media use (though they are increasingly watching both online).  Given this widespread appeal, these media may have an indirect effect by influencing how groups or cultures view body image.
Traditionally, most of the concerns about media and body image have revolved around girls, but more and more, researchers and health professionals are turning their attention to boys as well. A growing body of research indicates that although boys are less likely to talk about their insecurities, they too experience anxiety about their bodies.
Advertising, particularly for fashion and cosmetics, has a powerful effect on how we see ourselves and how we think we should look. Women’s magazines in particular have a tremendous influence on body image, with researchers reporting that teenage girls rely heavily on them for information on beauty and fashion, valuing their advice nearly as highly as that of their peers.
Photo manipulation, once the preserve of a small number of airbrush-equipped artists, has become commonplace in the fashion, publishing and advertising industries thanks to the introduction of photo-editing software such as Photoshop. (This program, first introduced in 1990, has become so widely used that “photoshopping” is often used as a synonym for photo manipulation.) As a result, heavily retouched photos – of men as well as women – have become nearly universal: a single issue of Vogue was found to contain 144 manipulated images, including the cover.