Mark Wahlberg sheds 30 kilos for role in 'The Gambler'

'Three Kings' star Mark Wahlberg has shed almost 30kg to play a role in 'The Gambler'.

The 43-year-old actor was on a liquid diet for a month and said he kept losing weight during the film's shoot, reported News.Com.Au.

"I was on a liquid diet for about a month under the watchful eye of doctors," the actor said.

Wahlberg plays the role of a literary professor whose gambling addiction sees him run afoul of gangsters.

"I continued to lose weight during the shoot but I was relieved when it was over and I could start eating again," he said.

When asked about his rapid transition to his normal size, the actor said, "It's a lot easier to gain it than it is to lose it.