Ashton Kutcher hospitalised after adopting Steve Jobs' fruitarian diet
Joshua Michael Stern's 'jOBS' premiers at the Sundance Film Festival
The Two And A Half Men star told The Associated Press at the Sundance Film Festival: "I ended up in the hospital two days before we started shooting the movie." He added: "I was like doubled over in pain, and my pancreas levels were completely out of whack, which was completely terrifying, considering everything."
Kutcher also watched "hundreds of hours of footage" in preparation for the role and described it as "terrifying" playing someone who is still so fresh in people's minds.
The biopic tells the story of Steve Jobs' journey from college dropout to one of the most successful entrepreneurs of the 20th century and premiered at the Sundance Film Festival this week. Steve Jobs died of pancreatic cancer in 2011.
Directed by Joshua Michael Stern, the first clips from jOBS were recently revealed. It has already come under criticism from Apple co-founder Steve Wozniak, played by Josh Gad, who told Good Morning America: "What I saw was just so far from anything that really happened or said in those days".
The West Wing writer Aaron Sorkin is also writing a rival Jobs movie based on Walter Isaacson's bestselling biography.
jOBS opens in US cinemas on April 19 with a UK release date yet to confirmed. Watch the first clip of Ashton Kutcher as Steve Jobs below.