Study: Marathoners have more artery plaque

[KARE-TV, March 31, 2014] It's impressive when someone finishes a marathon. Even more impressive, are those who run marathons year after year. But a controversial study is raising questions about health benefits of distance running. Cardiologist, Dr. Robert Schwartz of the Minneapolis Heart Institute at Abbott Northwestern, part of Allina Health, is one of the study's authors.

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