Hugh Jackman used an experience of being poisoned by eating canned tuna as inspiration for his new movie 'Logan'.
The 48-year-old actor will portray Wolverine for the final time in new movie 'Logan' and revealed the tale will see the mutant slowly dying as his powers are fading and wounds not healing, thanks to the poisonous adamantium in his bones.
And the storyline was inspired by both comic book history and the Australian star's own experiences.
He said: "I had high mercury levels from eating tins of tuna. My doctor said, 'You're meant to be five,' whatever that number means, and I was at 37.'
"The adamantium will eventually kill him. The effect of metal poisoning, on what for Logan would be a massive level, would be depression, tiredness, massive joint pain. I loved the metaphor of his weapon being the thing that's killing him, on every level."
Hugh also got into difficulties while shooting the film in the desert as the altitude made him faint during a scene where he had to run up a hill past various obstacles, at 9,000 ft above sea level.
After repeatedly falling over during shooting the scene, he recalled: "The second-unit director said, 'Man I think we should call it a day.' I said, 'Naaaah mate, I just tripped.'
"And he goes, 'You tripped on the take before. You fainted on this one.' "
Following eight outings as Wolverine/Logan, Hugh decided the new movie would be the right time to call it a day following a chat with legendary comedian Jerry Seinfeld at the comic's birthday party in 2014.
He told Empire magazine: "He doesn't particularly like parties and I'm the same, so we always end up in a corner chatting.
"I started asking about 'Seinfeld' and he said, 'I always had a belief that creatively you should leave on a high.'
"Not just for legacy, though I'm sure that was a part of it.
"But he said that if you're tapped out, it's Herculean to work out what the next thing is.
"If you leave something in the tank creatively, then you just spark into the next thing. I went home from that dinner and I just knew. This was it."
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