THE world’s fattest man has died from pneumonia following a lengthy battle with his weight.

Brit Keith Martin who weighed an astonishing 445 kilos at his heaviest was aged just 44.

The bed-bound Londoner died eight months after a gastric sleeve was fitted which removed three-quarters of his stomach.

According to the UK Mirror Martin consumed on average 20,000 calories a day in a diet that included six-egg fried breakfasts and lunches and dinners consisting of pizzas, kebabs, take-outs and Big Macs. He washed this down with 3.5 litres of coffee and two litres of fizzy drinks.

Kesava Mannur, the surgeon who fitted Martin with his gastric belt at London’s Homerton hospital, called on the UK government to impose a fast-food tax to help protect the morbidly obese.

Mr Mannur told the Mirror: “Keith, like many people, had some emotional issues and he turned to food for comfort.

“That type of behaviour is nothing new, but what is new is how easy it is for people in that situation to buy a lot of cheap junk food.”

Martin was featured in a documentary for UK’s Channel Five.

He told the cameras he had suffered from depression and anxiety since he lost his mum — also to pneumonia — when he was 16. He said his weight ballooned after he became seriously depressed in his twenties.

Keith, who was unemployed and spent most of his time playing video games and watching TV, said: “I started eating to ease the pain and before I knew it, I was binging every time something upset me.

“I’ve always been depressed. I am an agoraphobic — I’m afraid of public places — but it was never treated.

“I just want to be happy, without needing food to make me happy.”