The Teen Media Study used the US Department of Agriculture food-group pyramid as a basis for the “media-diet” concept. The 2001–2002 study among 3261 7th- and 8th-graders (12–15 years old) introduced a new measure of exposure to sexual media content called the “sexual-media diet,” which took into account both the amount of time spent with 4 different media (TV, movies, music, and magazines) and the amount of sexual content in the specific vehicles (eg, programs, music albums)., This research by Brown and Steele, indicates that adolescents' media diets are governed primarily by the teen's developing sense of self and that their media diets differ greatly by gender and race.
Sexuality and the Media - Sage Publications
The RAND study, in a subsequent analysis that included an additional wave of survey data, also linked sexual media use to pregnancy among sexually active teens. An additional study linked sexual media exposure in the form of music videos to STIs. In addition, a wide variety of studies have linked exposure to sexual media to more permissive or recreational attitudes toward sex among youths and college students, or have found cross-sectional associations between media use and sexual behavior. Some of the attitudinal studies provide evidence of causal links between media use and short-term changes in attitudes and beliefs. While none of the studies of behavior reached causal conclusions (conducting a study that manipulates sexual content exposure to see whether it changes sexual behavior would be unethical by most standards), they provide some of the strongest evidence possible regarding the plausibility of such a relationship.
Effects of Sex in the Media - Kansas State University
Brown J, L'Engle K. Sexual attitudes and behaviors associated with U.S. early adolescents' exposure to sexually explicit media. . 2009;36(1):129-151.
Sexual Messages in Advertising - Media literacy and sex