Props to the American Medical Association!
The basic idea is that the AMA is acknowledging the harm that photoshop and digitally altering images can have and often does have on people, especially children and adolescents. As a result, they are working towards establishing guidelines with marketing and advertisement organizations to represent a healthier, more realistic portrayal of bodies in the media. While they do not specifically say how they plan to do this (I imagine this will take quite a bit of thought+time+work), it is encouraging that physicians are emphasizing the importance of the media's impact on how we perceive beauty and the resulting potential health implications. This isn't to say that the media causes eating disorders- I say this often- because the media does not cause eating disorders. However, unrealistic photos can encourage unrealistic expectations about what our bodies are supposed to look like, which often leads to dieting/disordered eating, which can contribute to the development of an eating disorder.
For more, check out the AMA's website here.
BODY IMAGE AND ADVERTISING TO YOUTH: Advertisers commonly alter photographs to enhance the appearance of models' bodies, and such alterations can contribute to unrealistic expectations of appropriate body image – especially among impressionable children and adolescents. A large body of literature links exposure to media-propagated images of unrealistic body image to eating disorders and other child and adolescent health problems.