Katie Couric revealed on her talk show today that much like her guest, Demi Lovato, she too suffered from an eating disorder as a teenager.

In an taped interview to be aired today, Couric chatted with the X Factor judge whose troubles with eating disorders are well-documented. The former CBS Evening News anchor told Lovato that she can relate well to what Lovato has gone through.

“I wrestled with bulimia all through college and for two years after that,” Couric revealed. “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.”

Lovato said her issues began as young as when she was three years old. “I remember being three years old in a diaper and rubbing my hand over my stomach,” adding, “and I remember thinking in my head, ‘I wonder if one day this will ever be flat?’”

Watch Katie’s show today to hear more about the struggles these amazing women have overcome.