Jared LetoJared Leto has admitted he’s worried gaining weight for his role in Chapter 27 has permanently damaged his body.

Jared gained more than 62lbs (around 4 1/2 stone) to play John Lennon’s killer Mark David Chapman in the film and said recently: “I’d never do it again; it definitely gave me some problems.”

“I don’t know if it was gout - but I had a definite problem with my feet. Towards the end of the shoot, one of the glaring issues was the pain I had with my feet. I couldn’t walk for long distances; I had a wheelchair because it was so painful.”

“My body was in shock from the amount of weight I gained. It took about a year to get back to a place that felt semi-normal. I don’t know if I’ll ever be back to the place I was physically.”

But the 30 seconds to Mars frontman still thinks it was important to gain the weight rather than just using a fat suit: “It was important to make that transformation because I thought his physical representation of himself was an indication of who he was. And it changed everything about who I was - the way I walked , the way I talked, the way I felt about myself, the way people treated me.”

“It was an interesting experience. It was interesting to see people reactions - particularly people I knew but hadn’t seen in a while and who obviously thought I’d let myself go.”