Affecting an estimated 4.4% of U.S. adults in their lifetimes, bipolar disorder causes severe changes in energy level and mood that can make day-to-day life extremely difficult without treatment. In a brand-new interview with People, Mariah Carey opened up about her years-long struggle with the mental illness, and she's not alone. Other stars are also raising awareness about the disease and its unique challenges.
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Mariah Carey called her diagnosis "incredibly isolating."