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9. Mariah Carey
Mariah was first diagnosed with bipolar disorder in 2001. After being in denial for a couple of years, the singer eventually went for treatment. After years of suffering in silence, she is now getting the help she needs and wants to do what she loves. She says she is now comfortable enough to share her struggle with bipolar II disorder with the world. Her hope is that other people who have it will not be defined by it and live in isolation as she had done in the past.