After taking on the title role in his new movie Jobs, Ashton Kutcher admits he got so into the character of Steve Jobs that it forced him into the emergency room early on in the filming process.

Kutcher, 35, not only developed an uncanny resemblance to the Apple founder, he also took on Jobs' diet, namely a fruitarian diet from the book Mucusless Diet Healing System, where most sugars are cut out.

"[The book] talked about the value of grape sugar and that was probably the only pure sugar you could have in your body," Kutcher told reporters during a Jobs press conference this week in New York City.

"I think the guy who wrote that book was pretty misinformed," Kutcher continued. "My insulin levels got pretty messed up and my pancreas kind of went into some crazy, the levels were really off and it was painful. I didn't know what was wrong."

Kutcher was eventually hospitalized.

In addition to the dietary changes, Kutcher lost 18 pounds for the role. He also personified Jobs in various other ways.

"I started consuming the things that he consumed. I started studying entrepreneurs he admired, listening to the music he listed to, eating the food he ate and walking the way he walked," Kutcher said. "He'd go for a walk when he wanted to have a meeting with someone and I just started doing that and started walking without shoes on and wearing Birkenstocks and going for one-hour walks every day." (ABC)

Jobs hits movie theaters nationwide on August 16.