Gallery: Mariah Carey Opens Up About Living With Bi-Polar Disorder

Mariah Carey has been an international pop star and media sensation for decades — and for good reason! She has released 14 studio albums and has a famous 5-octave vocal range. She's one of the best-selling music artists of all time, but now, she's opening up for the first time about a different part of her personal story: her struggle with bi-polar disorder.

In an exclusive interview with People magazine's editor in chief Jess Cagle, Carey acknowledged that she was diagnosed with the disorder in 2001.

Keep reading to learn more about why Carey chose to keep the diagnosis secret for so long, and what prompted her to come forward and openly discuss it now.