Demi Lovato Opens Up About Bipolar Disorder

'I felt relieved when I found out,' 'X Factor' judge tells Cosmopolitan in July issue.By John Mitchell Demi Lovato on the cover of the July issue of <i>Cosmopolitan</i> Photo: Cosmopolitan Demi Lovato is opening up about her bipolar disorder in the July issue of Cosmopolitan, telling the magazine that being diagnosed was a relief because it meant she could treat the problem. "I felt relieved when I found out. Like I'm not completely crazy; there's a medical reason for all o

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