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 Arya Premana weighs 30 stone - and he's just 11-year-old.He's the world's heaviest child, and has had to have life-saving surgery

New Channel 5 documentary, World's Heaviest Child: Extraordinary People, is taking a closer look at his life.

After years of over-feeding him, parents Ade and Rokayah Soemantri were eventually convinced that their young son had to have drastic surgery or he’d die.

 Travelling to the Omni hospital in Jakarta, Arya was the youngest person to ever undergo a five-hour gastric sleeve operation.

Daily Mirror reports in a trailer for the show, it's revealed that Arya weighs the same as six boys his age.

As he sits by the side of a pool eating an ice cream, his mother tells the cameras: "Arya is very famous, so I feel very happy."

 His father adds: "We came from a village, and then we were considered celebrities in the media and on TV," as clips of him appearing on various TV shows are shown.

So far, a team of medical experts have failed to find a reason for his weight gain.

A doctor says: "If this situation is not controlled it could be fatal and he'll die.