KATIE COURIC comes clean about her battle with eating disorder – bulimia.

The NY Post reported that that Couric makes the emotional confession on her daytime talker as she interviews new “X Factor” judge Demi Lovato, who sought treatment for “emotional and physical issues” including eating disorders and cutting in 2010.

Katie, 55,  told here TV aud, “I wrestled with bulimia all through college and for two years after that.

And I know this rigidity, this feeling that if you eat one thing that’s wrong, you’re full of self-loathing and then you punish yourself, whether it’s one cookie or a stick of gum that isn’t sugarless, that I would sometimes beat myself up for that.

“How do you have a healthy relationship with food, and say, “You know what, I can have one cookie and it’s OK?” That is such a huge thing for people who wrestle with this.”

Couric, 55, suffered from bulimia when she was between the ages of 18 and 24, while attending  the University of Virginia, and when she first began her news career at the ABC news desk in Washington, D.C.

Reportedly Katie kicked the “eat and puke” habit by pow-wowing with a therapist.

Medical experts say an estimated  8 million people are suffering from a some sort of eating disorder.