SOURCE: CELEBUZZ

Demi Lovato says that while in a treatment facility for an eating disorder and issues with cutting, she was diagnosed with bipolar disorder.

The former Disney star told People.com:

“I never found out until I went into treatment that I was bipolar. … Looking back it makes sense. There were times when I was so manic, I was writing seven songs in one night and I’d be up until 5:30 in the morning.”

This news comes nearly a week after Demi was throwing her support behind another celebrity struggling with the same disorder.

Demi expressed her concern for Catherine Zeta-Jones, who checked into a mental health facility to receive treatment for bipolar II disorder but has since been released, tweeting:

“I don’t know Catherine Zeta-Jones personally but what she has decided to do it SO brave.. And SO difficult but worth it… I’m proud of her.”

Prior to her admittance of having bipolar disorder, Demi’s chatted Good Morning America anchor Robin Roberts Wednesday, disclosing how getting bullied led to an eating disorder and bouts with cutting. “I literally didn’t know why they were being so mean to me. And when I would ask them why, they would just say, ‘Well, you’re fat.”