God, Hope & Helping Others
Not long ago, researchers studied the heart health of a group of very fit older athletes -- men who had been part of a national or Olympic team in distance running or rowing, and runners who had completed at least a hundred marathons. The results were unsettling -- half of these lifelong athletes showed evidence of heart muscle scarring.
The affected men were invariably the ones who had gone through the longest, hardest training. And now a new study, this time in laboratory rats, provides solid evidence of a direct link between certain kinds of prolonged exercise and heart damage -- scarring and structural changes, similar to those seen in the human endurance athletes.
The research effectively shows that years of strenuous cardiovascular exercise can damage your heart.