According to a new study led by cardiologist James O’Keefe of 52,600 individuals over 30 years, the long-term health advantages of lots of running or faster running are not evident. The study includes the conclusion that “running too fast, too far and for too many years may speed one’s progress toward the finish line of life.”

While data has shown that runners benefit from their aerobic exercise in terms of their health and longevity, Dr. O’Keefe’s study, in addition to recent other scientific studies, noted that those who ran greater distances (more than 20 miles per week) or faster than an 8 miles per hour pace, did not gain mortality advantages. But those who ran fewer miles or those who ran slower than 8 mph, gained significant advantages.

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