"Despite all its benefits, running isn’t without risk. Every year, 36 million people in the United States run, and 40% to 50% of them suffer at least one running injury."
In new research announced last week, scientists examined which sports were the most likely to lead to knee arthritis. At the top of the list was both recreational and elite soccer, followed by competitive long-distance running,... from http://www.boston.com/lifestyle/health/articles/2011/11/10/new_research_ranks_top_sports_to_wreck_your_knees/
So your running magazines promote running. Great, good for you, now you believe what you want.