Steve Jobs’ Diet Put Ashton Kutcher in Hospital Days Before Filming Biopic

Ashton Kutcher spent time in the hospital just days before filming his movie role as former Apple CEO Steve Jobs, revealed the 34-year-old actor at the Sundance Film Festival.

Kutcher was imitating Jobs' fruit-only diet to prepare for the lead role in jOBS, the indie film about the tech luminary. The biopic premiered at Sundance, garnering mixed reviews.

"First of all, the fruitarian diet can lead to, like, some severe issues," he said. "I ended up in the hospital like two days before we started shooting the movie. I was, like, doubled over in pain.

"My pancreas levels were completely out of whack, which was really terrifying ... considering everything."

"My pancreas levels were completely out of whack, which was really terrifying ... considering everything."

Jobs died from pancreatic cancer in 2011.

The movie — not to be confused with the one Sony Pictures is creating based on Walter Isaacson's biography of Jobs — opens in theaters April 19. In Isaacson's book, though, the author quoted Jobs recalling one of his "fruitarian diets." Jobs described how a trip to an apple farm inspired his company's name: "Apple took the edge off the word 'computer.'"

Actors who portray real people in films often mimic their behaviors to better fit the part on screen, or even go on extreme diets to transform their bodies to look like someone else's.

Tom Hanks lost 55 pounds to resemble a stranded plane crash survivor in Cast Away, for example, while Charlize Theron gained 30 pounds to play a prostitute in Monster.

SEE ALSO: Steve Wozniak Says Scene From Steve Jobs Movie Is 'Totally Wrong'

1. 1. "She's Like the Wind" by Patrick Swayze Featuring Wendy Fraser

   Did you know the Dirty Dancing soundtrack featured a song from the film's star?

2. 2. "Mad About the Boy" by Jessica Biel

   Jessica Biel croons the opening credits song for her period movie Easy Virtue.

3. 3. "Too Close To Paradise" by Sylvester Stallone

   Really, Sly?

4. 4. "Country Strong" by Gwyneth Paltrow

   This isn't the first time Gwyneth has sung on screen (she belted out a few in Duets and made a Glee appearance). But "Country Strong" from the film of the same name was released as an actual single.

5. 5. "Never Think" by Robert Pattinson

   As well as songs for Twilight, Robert sang for indie comedy-drama How To Be.

6. 6. "My Funny Valentine" by Matt Damon

   Matt didn't need a singing double for The Talented Mr. Ripley.

7. 7. "Somebody to Love" by Anne Hathaway

   Anne was practicing for her Les Mis role way back in 2004.

8. 8. "Gone Gone Gone" by Colin Farrell

   Colin goes all country for Crazy Heart.

9. 9. "Somebody Kill Me" by Adam Sandler

   Sung by Adam Sandler, this song is actually featured on The Wedding Singer soundtrack.

10. 10. "Under The Boardwalk" by Bruce Willis

    Finally, not technically a soundtrack, but oh em gee!

Thumbnail image via Sundance Institute; video courtesy Chris Barrett's YouTube channel