Elvis died because he was a total pill junkie. He died from all the drugs he took he had an enlarged heart because of his drug habit end of story.
The Coroner disagrees with you. End of story?
All the opiates stopped his natural bowel movements. that left Elvis full of sht ...like 40# worth in his lower colon according to the autopsy.. Plus Heart disease and he was over 300#. Another speculation was all this was brought on by TBI he received on a movie set when he tripped and conked himself hitting his head on a bathtub.