Joseph Gordon-Levitt has "probably" been affected by porn, but thinks it is no worse than adverts shown on TV.
The actor plays a man addicted to X-rated videos in his new film 'Don Jon' - which he also wrote and directed - and while he has watched some adult movies in real life, he doesn't think they have affected him any more than adverts.
He said: "I don't think I'm particularly for or against [porn]. I watched it. Has it had some kind of effect on me? Probably, but I don't think it's had any more of an effect on me than images from all over the media. Commercials, especially - there's a [very lewd] commercial in 'Don Jon', and that's a real commercial - we didn't shoot that."
Unlike other movies about sex addiction 'Don Jon' takes an approach allowing for humour, and Joseph says the heart of the story isn't even really about sex.
He added: "It's about how we treat each other like things, rather than people. Media can contribute to that, and that's a personal story for me because I grew up working in TV and movies. So having this Don Jon character who watches lots of pornography and this princess type (Barbara, played by Scarlett Johansson) who watches lots of romantic Hollywood movies seemed like a funny way of talking about these things."
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