How does society cause them?
What are some shows that make people want to have eating disorders?

The way society causes these types of problems related to self image, is you could say homophobia and heterosexism as well as plain vanity as well. Anyone that is fat or slightly fat is ugly. Women that are curvy or athletic are slutty or butch/lesbian. Men that are skinny are either faggots, gay, or losers. Being slim is the ideal for women while being muscular is the ideal for men. Reality shows preferably like The Bachelorette or The Bachelor, for example, would make both men and women want to have self image problems and eating disorders because the males on those shows are typically muscular while the women on those shows are typically slim.