"My secret is bleak diets," People quoted Carey, as telling the reporters.
A bleak diet consists of "basically soups and fish prepared really blandly.
Carrey also expressed her desire to improve her look.
"I still feel like I have a way to go," she said.
But, the 38-year-old singer also insisted that she would never loose her womanly curves.
"I don't feel like you have to be a size zero. We should all just embrace who we are physically. I'm not supposed to be a stick figure girl. It's just not me," Carey said.