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

Brian Anthony Hernandez

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.

[More from Mashable: YOLO Song From ‘SNL’ Reaches Top Spot on iTunes Charts]

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.

[More from Mashable: SAG Awards Recap: Best Moments and Acceptance Speeches]

"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.

Click here to view the gallery: 10 Movie Stars With Surprising Musical Talents

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

This story originally published on Mashable here.