We live in a society that depends on information and communication to keep moving in the right direction and do our daily activities like work, entertainment, health care, education, personal relationships, traveling and anything else that we have to do.
We buy what we are told to be good, after seeing thousands of advertisings we make our buying decisions based on what we saw on Tv, newspapers or magazines to be a product we can trust and also based on what everyone else that we know is buying and their decision are also base don the media.
These are the effects of mass media in teenagers, they buy what they see on Tv, what their favorite celebrity advertise and what is acceptable by society based on the fashion that the media has imposed them.
There are some positive and negative influences in young people.
Here is a positive influence example, if there is a sport that is getting a lot of attention by the media and gains popularity among your friends and society, you will more likely want to practice the sport and be cool with all your friends. The result is that you will have fun with your friends and be more healthy because of the exercise your are doing.
However a negative influence in teenagers is the use of cigars by celebrity movie stars, the constant exposure of sex images, the excessive images of violence and exposure to thousands of junk food ads.
Young people are in a stage of life where they want to be accepted by their peers, they want to be loved and be successful. The media creates the ideal image of a beautiful men and women and tells you what are the characteristics of a successful person, you can see it in movies and tv. Its a subliminal way to tell you that if you are not like them you are not cool yet so its time to buy the stuff they buy and look like they look.
Another negative influence in teenagers that has grown over the last years are anorexia and obesity. There are millions of adolescents fighting obesity, but at the same time they are exposed to thousands of advertisements of junk food, while the ideas image of a successful person is told to be thin and wealthy.
Also more women are obsessive with losing weight even when they are not obese, there are many thin women that want to look like the super models and thin celebrities so they engage in eating disorders which leads to severe health issues and even death.
However these negative issues that are caused by mass media have become in recent years the concept of ad campaign. For example Benetton they took the image of the young man dying from AIDS and used at the fore front of there advertising campaign. Issues like this that have come the new face of advertising have all derived from the negative outcome of advertising via mass media. In affect it has created a new kind of advertising
Resources
http://en.wikipedia.org/wiki/Mass_media
http://en.wikipedia.org/wiki/Advertising