Mariah Carey has revealed that she suffers from a bipolar disorder. The singer-songwriter told People magazine that she was first diagnosed with the disorder in 2001, when she was hospitalised for a physical and mental health breakdown. "I didn't want to believe it... Until recently I lived in denial and isolation and in constant fear someone would expose me. It was too heavy a burden to carry and I simply couldn't do that anymore. I sought and received treatment, I put positive people around me and I got back to doing what I love writing songs and making music," Carey said.