Hugh Jackman says his falsetto is 'damaged' because of all the 'growling and yelling' he did as Wolverine

• Hugh Jackman appeared on BBC's Front Row radio program on Monday. 
• Jackman said playing the Marvel character Wolverine has damaged his voice. 
• "My vocal teacher in drama school would've been horrified with some of the things I did," he said. 

Hugh Jackman says playing Wolverine may have damaged his voice. 

Jackman, 54, speculated about his vocal cords in an interview with BBC's Front Row on Monday. Jackman, who starred in "The Music Man" on Broadway for 11 months, has played Wolverine nine times so far.

"I've done some damage to my voice with Wolverine," Jackman told the outlet. "My falsetto is not as strong as it used to be, and that I directly put down to some of the growling and yelling." 

Jackman continued that he disregarded some vocal techniques while playing Wolverine. 

"My voice teacher in drama school would've been horrified with some of the things I did, because we learn a technique of how to shout and how to yell without ruining your voice," Jackman told the outlet. "However, during Wolverine, I did some screaming and yelling and things that I think did damage to my voice."

Fortunately, Jackman said he's working to preserve his voice. 

"I work with a singing teacher and I try not to hurt myself," Jackman told BBC Front Row. "I put a lot of effort into both physical movement and my vocal preparation for every role." 

Jackman played Wolverine in a number of films, including "X-Men" in 2000, "X2: X-Men United" the following year, and "X-Men: The Last Stand" in 2006. He also voices Wolverine in video games like "X-Men Origins: Wolverine." Jackman will reprise his role in Marvel Studios' upcoming film, "Deadpool 3." 

The action star is also well-known for his theater performances, including "The River" from 2014 to 2015 and "The Boy from Oz" from 2003 to 2004. 

In an interview with Variety, Jackman said he accidentally ripped his "The Music Man" costumes because he was bulking up for "Deadpool 3." 

"Apologies to the entire cast of 'The Music Man,' and in particular my dresser and my wife — all the protein shakes are starting to kick in fast," he told the outlet.