Paul Inman of Haworth, West Yorkshire, died after consuming 3 liters of cola everyday, which caused his lungs to swell up dangerously.
The 30-year-old was in the habit of guzzling cola every day since the age of 10, the Daily Mail reported.
"I've said all this time the cause of it was he drank excessively, absolutely excessively. He had done since he was 10 years old. We used to say he had a self-destruct button," the man's mother told the paper.
The inquest into Inman's death heard that the man died in his sleep in March 2012. Pathologist Deirdre Mckenna said that Inman's lungs had swelled three to four times the normal weight mainly due to his excessive drinking.
She ruled out epilepsy or heart attack as the cause of death. The inquest brought a verdict of death due to natural causes.