Nicole Kidman has said she was suffering from depression and felt like she was "not in her own body" while playing the role of writer Virginia Woolf in the 2002 drama The Hours.
In the film, the Hollywood star, 54, portrayed the tormented author who was struggling with her own mental health while trying to write her novel Mrs Dalloway. Woolf took her own life in 1941.
Kidman won the Best Actress Oscar in 2003 for her performance but admitted that she probably does not "consider danger enough" when taking on such roles.
The Hours, she said: "I don't know if I ever thought of the danger, I think I was so in her."Speaking to This Cultural Life on BBC Radio 4 about
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"And I think I was in a place myself at that time that was removed, depressed, not in my own body," she continued.
"So the idea of Virginia coming through me, I was pretty much an open vessel for it to happen.
"And I think Stephen (Daldry, the film's director) was very delicate with me because he knew that."
The actress did not wish to elaborate on why she felt this way but noted that "depression hits you at different times".
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She added: "I was open to understand it, which I think is probably the beauty of life as an actor.
"There's a point where you're like, 'Oh, I have so many experiences now'," she explained.
"I've delved and traversed many different landscapes of mental health and loss and ideas and joy and raised birth and you know, life is what it is.
"It's far more examined for me now than when I was 14.
"I'm definitely in it. I'm definitely feeling it and definitely aware of the preciousness of it and the time."
Kidman has also received Oscar nominations for her roles in 2001's Moulin Rouge, 2010's Rabbit Hole and 2017's Lion.
She is currently starring and helping to produce the upcoming female-led TV series Roar, which is based on Cecelia Ahern's collection of 30 short stories, which was published in 2018.
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The actress has also taken to the stage during her career, including the West End production of Photograph 51 which premiered in 2015.
Kidman said she would "love to be brave enough" to return to theatre and teased that she may have a show on the horizon.
She said: "There's something I'm circling with a director who's a film director, but he's also got a lot of theatre experience.
"And he sent me something that I was like, 'Oh, I'll bleed for this, am I ready to bleed every night?' Yikes.
"I have to consider that. But yeah, I'm, like, getting drawn there. It would have to be a shorter run just because at some point you go, 'I don't want to go crazy'."
This Cultural Life will be broadcast on New Year's Day at 19:15pm on Radio 4 and BBC Sounds
Source: Press Association