Theo Wargo / WireImage 1 / 14
Theo Wargo / WireImage 1 / 14

Demi Lovato has been open with her fans about her struggle with food, and now the star is fuming over a joke about eating disorders on the Disney Channel's show "Shake It Up."

PHOTOS: Demi through the years

Lovato, 19, who entered rehab last year for bulimia and bipolar disorder was upset with a character who quipped, "I could just eat you up, well if I ate."

"I find it really funny how a company can lose one of their actress' from the pressures of an EATING DISORDER and yet still make joke about that very disease. #nice," the singer and former star of "Sonny With a Chance," tweeted Friday.

Lovato added: "And is it just me or are the actress' [on Disney Channel] getting THINNER AND THINNER.... I miss the days of RAVEN, and LIZZIE MCGUIRE," referencing former Disney actresses Raven Simone and Hilary Duff.

PHOTOS: Famous Disney stars 

She then sent one final message to her former employer: "Dear Disney Channel, EATING DISORDERS ARE NOT SOMETHING TO JOKE ABOUT."

VIDEO: Watch Demi's triumphant return to the stage

In addition to reaching more than five million followers, Lovato's rant clearly made it to Disney. Just a few hours later the company's official public relations responded to her with two tweets:

"@ddlovato - we hear you & are pulling both episodes as quickly as possible & reevaluating them"

"@ddlovato - It's NEVER our intention to make light of eating disorders!"

As a result, Disney pulled the "Shake It Up" episode titled "Party It Up" and an episode of another show called "So Random!."

PHOTOS: Biggest feuds of 2011

The company's quick actions seemed to satisfy Lovato. She tweeted: "@DisneyChannelPR thank you."

MORE ON WONDERWALL:

See Demi's 'Faith' Tattoo

Demi Lovato: It's a Big Responsibility, Dating Me

Excessive or Exceptional? Vote on Demi Lovato and Blake Lively's Bold Fashion Statements