Lady Gaga has spoken out about her experiences with bulimia and being the object of bullying during her high school years.

The star - who this week confirmed the first of her 2012 world tour dates - appeared on US TV show It's Our Turn and spoke openly to host Maria Shriver.

"I started having trouble with girls in middle school,” the singer said. “I always knew that I wanted to do something very career oriented, and I always wanted to be a musician.”

"I used to throw up all the time in high school," she said. "So I'm not that confident. I wanted to be a skinny little ballerina but I was a voluptuous little Italian girl whose dad had meatballs on the table every night. "I used to come home and say, 'Dad, why do you always give us this food? I need to be thin'. And he'd say, 'Eat your spaghetti'."

The then-aspiring singer eventually overcame her urge to force herself to vomit after eating, admitting, "It made my voice bad, so I had to stop. The acid on your vocal chords - it's very bad".

But that doesn't mean Gaga is completely at ease with her body image now she's a pop idol: "Weight is still a struggle. Every video I'm in, every magazine cover, they stretch you - they make you perfect. It's not real life."

"Every video I'm in, every magazine cover, they stretch you; they make you perfect,” added Gaga. “It's not real life. I'm gonna say this about girls: The dieting wars have got to stop. Everyone just knock it off. Because at the end of the day, it's affecting kids your age. And it's making girls sick."

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