A Brit who was officially the world’s fattest man has died from pneumonia, his family have announced.Keith Martin, 44, suffered with weight problems for most of his adult life, at one point consuming as much as 20,000 calories a day, nine times more than the recommended amount.His sister Tina told the Mirror last night of her brother’s passing in March‘We’re still grieving. We miss him very much,’ she said.Mr Martin said his extreme size came form a lifetime of binging of high sugar junk food such as pizzas and fizzy drinks, which he turned to as his comfort food.

Keith Martin as a young man (Picture: Barcroft)

At his largest he weighed a whopping 70 stone.

MORE: Former ‘world’s fattest man’ poses naked to show skin problem after weight loss

MORE: Britain’s former fattest man finds love on Facebook after losing 48st

Keith Martin was 70 stone at his heaviest (Picture: Barcroft)

He was part of the Channel 5 documentary 70 Stone and Almost Dead, which featured him dropping 25 stone in order to qualify for a gastric band operation in 2012.However health complications arose from the surgery after Martin discharged himself from hospital against doctor’s order because he was homesick.

In 2012 Keith had a gastric band fitted (Picture: Barcroft)After suffering from septic shock syndrome he was returned to hospital, where he then contracted pneumonia.

Although he was discharged from hospital for the last time in February, he never fully recovered from his health issues and succumbed to his illnesses in March.

MORE: World’s fattest woman plans to walk up aisle with toyboy lover

Briton Keith Martin, the fattest man in the world, dies aged …

Saving Britain’s 70-Stone Man: Keith Mason’s last ditch …

Britain’s Fattest Man “980 Lbs” – Keith Martin – YouTube