Conventional wisdom has it that running is bad for your knees. But is that really true, or is it just another medical myth? The medical literature offers some answers.

Conventional wisdom has it that running is bad for your knees. But is that really true or is it just another medical myth? The medical literature offers some answers. A 2008 study found that knee arthritis was not more common in long-distance runners. A 2006 German study found the same thing. A 1998 study found that older runners and non-runners had the same rate of knee and hip arthritis though the runners had higher bone density. Finally runners tend to suffer less overall disability than people who don't run according to a 2006 study.