Speaking to a live audience in the gymnasium of Brentwood School in LA, the 25-year-old star confessed her eating disorder in public for the first time.
The singer was being interviewed by the journalist and author Maria Shriver about bullying at school, as part of a new annual Young Women's conference 'It's Our Turn'. She told Shriver that she had been "pretty delusional" at school, that she wanted to "change the world and bullying in America".
But it wasn't until a member of the audience, a school student, stood up and asked her if she, too, had ever struggled with "body issues" that Lady Gaga moved on to the subject of her bulimia.
"I used to throw up all the time in high school. So I'm not that confident. And maybe it's easier for me to talk about it now because I don't do it anymore," she said.
"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," Lady Gaga revealed. "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.'"
When Shriver asked her how she got through it, she answered that she was grateful that she had had to quit to save her voice.
"The acid on your vocal chords -- it's very bad. But for those of you who don't sing, you maybe don't have that excuse until it's too late. It's very dangerous," she said.
The singer, who impressed the fashion industry with a dress made of meat, also spoke about how deceptive images in magazines can be for young girls.
"Every video I'm in, every magazine cover, they stretch you; they make you perfect. It's not real life... The dieting wars have got to stop."
http://www.telegraph.co.uk/culture/musi ... nager.html