Disney starlet Demi Lovato has opened up about her history of eating disorders and self-harming.

"Yes, there have been times when I definitely have been tempted to get rid of my dinner. But I will deal with it for the rest of my life because it’s a life-long disease,” she says in the new issue of ‘Seventeen’ magazine.

The ‘Remember December’ singer goes on to offer advice to teenage girls who may be dealing with the same issues that she did.

"If you are going through that dark period, go to your family and closest friends. Don’t put yourself in danger," she says. "I wish I could tell every young girl with an eating disorder, or who has harmed herself in any way, that she’s worthy of life and that her life has meaning. You can overcome and get through anything."

Watch Demi perform ‘Here We Go Again’ live here: