The world's fattest man has died of a heart attack at the age of 38 after reportedly drinking more than six energy drinks a day.

Andres Moreno, from Ciudad Obregón in Mexico, reached a weight of over 70 stone at his heaviest.

His doctor reportedly said he had been drinking more than six energy drinks a day in the three days running up to his death.

As he was very obese and suffering from diabetes, such stimulate drinks could have caused "an irregular heartbeat".

He died on Christmas Day after a heart attack and complications from peritonitis.

Two months ago, Mr Moreno had undergone extreme weight-loss surgery where three quarters of his stomach was removed.

Andres Moreno died of a heart attack (EPA)

His remaining stomach was then reshaped into a tube to help prevent him from overeating.

Mr Moreno had lost 19 stone naturally to reach the weight of 50 stone in preparation for the surgery.

Dr Jorge Ojeda, who treated Mr Moreno, told MailOnline: "He drank more than six energy drinks a day according to his family and we believe it could be a lot more than six.

“As an obese man, although he was losing weight and was starting to move, exposing yourself to a stimulant can cause an irregular heartbeat, and that or a heart attack can lead to death."