Well it might not have been drugs now, but I mean her physique during her WWE days was most likely the result of a large amount of hormones and steroids. Even if they don't harm or kill you right away, they're going to take a toll on a persons body.
There is only so much of that you can do without outside assistance I fear. Amazing Wrestler though, really sad that she never made it into the Hall of Fame considering some of the other people in there, even this years Godfather who had a gimmick for years that he went around with a group of prostitutes.
Not most likely. 100% the reason. Look at that Stan Smith jaw line, definitely not natty. Also she has been suffering from Alcoholism for quite some time, so i'd also assume it was a drug overdose.