Obese Man Died - The world's most obese man died of pneumonia after battling with weight the majority of his life and undergoing a surgery to reduce weight.

Keith Martin, a Londoner, weighed 445 kilos at his heaviest and underwent a successful gastric sleeve surgery, which removed three quarters of his stomach, the Telegraph reported.

After his death, the surgeon who operated him is now calling on the government to implement higher taxes on fast food in order to make it more expensive and people not to be able to buy it so "easily."

The head surgeon, Kesava Manur, operated Martin last year and stated that if he had lived, he would have kept losing weight and eventually be able to walk.

"The government needs to make unhealthy food more expensive. Otherwise we'll continue to see more and more people like Keith. In the past few years I have treated several people who weighed between 45 and 60 stone," the doctor who operated the world's most obese man said.

According to Yahoo News, Martin was consuming 20,000 calories per day, which is almost 10 times the recommended amount for an adult.

The unhealthy diet he followed included: six-egg fried breakfasts and lunches and dinners which consisted of pizzas, kebabs, take-outs and Big Macs. Apart from that, he consumed 3.5 liters of coffee and two liters of fizzy drinks.

The world's most obese man became known to the public after he appeared in a documentary for UK's channel five. During that time, he said he had suffered from depression for a long time, since his mother's death.

It was since he was 16 years old that he began struggling with his weight and in his twenties the problem became more severe and acute.

In addition, he stated that he was an agoraphobic, which is the fear to public places, and he was never treated for it. Due to that reason, he categorized himself as "always being depressive."

"I just want to be happy, without needing food to make me happy," Martin, the world's most obese man said and he really hoped to be able to carry a healthy lifestyle after the surgery.