In its study of masculinity and sports media, the research group Children Now found that most commercials directed to male viewers tend to air during sports programming. Women rarely appear in these commercials, and when they do, they’re generally portrayed in stereotypical ways.
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.
One of the most important recent developments in advertising to kids has been the defining of a “tween” market (ages 8 to 12).
In Canada, there are rules for advertising to children. Except in Quebec, where all advertising to children under the age of 13 is prohibited under the Quebec Consumer Protection Act, advertisements in broadcast media directed at children under 12 years of age must follow a set of voluntary guidelines called the Broadcast Code for Advertising to Children. The Code does not pertain to ads broadcast on U.S channels. Compliance with the Code is a condition of licence for Canadian broadcasters.
Parents of young children have an important role to play in protecting their kids from invasive marketing, and in educating them about advertising from an early age.
Canadians under the age of twenty – the “Echo Generation,” as they’re often called –make up a quarter (26 per cent) of the country’s population.
Teens use the Internet as much, and in similar ways, as adults. But they also often engage in risky behaviour such as downloading illegal copies of movies and music. Popular social networking sites, like Facebook, can also expose teens to a variety of security risks.
The Internet has revolutionized how young people watch movies: half of Canadian teens say that they download movies without paying for them at least once a week. 
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.