240kg Aus 'Biggest Loser' contestant heaviest ever in history of show

This year's Australian Biggest Loser features the heaviest contestant in the history of the show's franchise anywhere in the world.

Ryan Preuss, a 29-year-old insurance salesman from Brisbane, is expected to weight in at 240kg in tonight's premiere of the weight loss reality show, and admitted that he has got to this point purely by over-eating.

Preuss admitted that his weekly shopping list consists of 12 bottles of soft drink, four large pizzas, sausage rolls, chips and four family-size chocolate blocks, together with regular fast food and takeaway.

Biggest Loser trainer Shannan told the Sunday Herald Sun: "It's not rocket science to realise how someone can get to this point. The way he expresses himself is by eating and he has never done anything athletic in his life because his pain tolerance is virtually non-existent."

Preuss lost 65kg when he was a student and said that he believes he can achieve weight loss again. "I want to feel happy about myself again," he admitted. "I know inside my head if I stick to it I can do it again. I don't want to be just sleeping, I want to have more energy."

It is believed that all the contestants on this year's The Biggest Loser are single and producers hope that it could encourage some romance. There are rumours that two couples have already formed on the show.

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Watch this year's The Biggest Loser promotional video below: