Want to Model? MTV Show Says Weight Loss is Key

MTV Is Feeding Off Society's Stereotypes About Beauty

For Debbie Then, a social psychologist who specializes in women and appearance, news that another show about weight issues might materialize wasn't particularly surprising.

"This show is just capitalizing on what we already know: You can't blame them for doing it," said Then.

"For women, the bottom line is that, cradle to grave, you have to look pretty," said Then. "And pretty for women and attractive for women means youthful looking and thin."

"I'm not at all surprised that this show is happening or that it will be successful," said Then. "Unless they stop getting ratings they won't take these [types of shows] off the air."

"These are the shows people want to watch."

ABC News' Jim Doblin contributed to this report.