I have been chewing on the theme - running too far and too fast has short and long term health consequences - of this video most of the afternoon.
I regularly reassure myself (and my worried wife) that running is better for me than not running. That the risk of a heart problem, while possible, is not highly probable and that many of the same or different risks come from a sedentary existence.
For now the best I can do is recommend watching this video, reading Born to Run, and join me in enjoying an outstanding Central Wisconsin Brewery Mud Puppy Porter.
Thanks to Dr. John M. for sharing this video on his blog.