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By William J. Kole The Associated Press

How safe is running a marathon? Heart doctors say it depends

BOSTON — It was the death heard ‘round the running world.

In July 1984, acclaimed author and running guru Jim Fixx died of a heart attack while trotting along a country road in Vermont. Overnight, a nascent global movement of asphalt athletes got a gut check: Just because you run marathons doesn’t mean you’re safe from heart problems.