Matthew McConaughey has revealed that Tom Hanks advised him on how to slim down for Dallas Buyers Club

McConaughey shed more than 40lbs earlier this year while playing an AIDS patient in director Jean-Marc VallÃ©e's upcoming film.

The actor recently told People that he asked his good friend Hanks about how to lose weight in a healthy manner.

"I actually called Tom and had a great conversation with him about what he learned about losing weight for Philadelphia and Cast Away," McConaughey explained.

He added: "I [also] consulted a nutritionist about the best way to do this."

McConaughey then explained how he was able to slim down so dramatically.

Photo gallery - actors who lost weight for roles:Movies: Actors losing weight for roles"I was going around and people were going, 'Hey, are you feeling all right?'" McConaughey commented.

"Then I hit 135lbs. I ran in to somebody and they didn't just ask if I was all right, they said, 'My God, we need to get you some help'. And I thought, 'There we go. That's the perfect spot'."

His Dallas Buyers club co-star Jared Leto more bluntly claimed that he lost a similar amount of weight by simply refraining from eating.

The movie opens in the US on November 1 and will debut in cinemas in the UK on February 7.

Watch a trailer for Dallas Buyers Club below:

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