The media uses an unobtainable body image in order to increase the sales of something. This in turn makes people, in general, and women specifically, feel fat. Some of these women kill themselves becoming skinny, while the others eat themselves into a coma. This in turn spurs the sales of diet and exercise books, again using an unobtainable body image. Overall, I'd say it's taken the "Ideal" body image from a thing of beauty, to a thing that decreases our (as a species) ability to have children.