As we wait for the autopsy results on the 51-year old actor, it's believed James Gandolfini died of a heart attack while vacationing in Rome.
It's still not known whether Gandolfini had a history of heart problems.
What we do know is:
That's leaving many to wonder whether they too could possibly be at risk for having a heart attack.
OutFront Tonight: Dr. Wayne Isom. He's performed heart surgery on Larry King, Regis Philbin, and David Letterman.
He's also chairs the Department of Cardiothoracic Surgery at the Weill Cornell Medical Center.