Disney star Demi Lovato wants to make it known that cyber-bullying should not be tolerated by anyone.

The 20 year-old, whose new album Unbroken is now available, says she was a victim of bullying and turned to cutting herself to ease the pain caused by others. She also suffered from an eating disorder after being called fat by online commenters. Lovato has used Twitter as a means to expose cyber-bullying and to spread awareness of the problem, saying that people who bully others over the internet must have been “born without a heart”.

Lovato is currently working with Ellen Degeneres, Drew Brees, and a host of other celebrities to repeal the “R” rating of the movie “Bully” and get it changed to PG-13, making it appropriate to show in schools. The star, who often uses social media to promote her latest projects, is outspoken on the effects of bullying and isn’t afraid to talk about her own issues with it. In fact, she partnered with Seventeen Magazine to make a documentary on her own struggles called “Demi Lovato: Stay Strong” which aired on MTV last week.