The effects of advertising on body image have been studied by researchers, ranging from psychologists to marketing professionals. While many factors, such as "parenting, education, [and] intimate relationships" also affect body image, "the media and body image are closely related."
This is because thousands of advertisements contain messages about physical attractiveness and beauty, examples of which include commercials for clothes, cosmetics, weight reduction, and physical fitness. Researchers have conducted studies in an attempt to see if such advertisements have effects on teenage body image, and what those effects might be.
Researchers, such as Mary Martin and James Gentry, have found that teen advertising reduces teenagers' self-esteem by setting unrealistic expectations for them about their physical appearances through the use of idealized models. Other researchers, such as Heidi Posavac, acknowledge this, but believe that this only applies to teenagers who already possess low self-esteem or a poor self-image.
In contrast, researchers, including Terry Bristol, have found teenagers to be generally unaffected by these advertisements due to the idea that repeated exposure can create immunity to images and messages in advertisements. Moreover, some researchers, such as Paul Humphreys, have concluded that exposure to such advertisements can create higher self-esteem in teenagers.