Sylvester Stallone's Son Died Of Heart Attack Not Drugs
The L.A. County Coroner has determined Sage died from natural causes. As for why he had a heart attack, we're told there was evidence of heart disease.
A source connected with the Coroner tells TMZ ... it was "unusual" for a person Sage's age -- 36 -- to have such advanced coronary problems, but that's what killed him.
Sage's body was found July 13, but he may have been dead days earlier. more on this story
TMZ submitted this story.