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That list is pretty terrible. 4 runners of the Boston marathon got brain cancer over ten years? Over 20,000 people finished the Boston marathon last year (http:
by imgabe 17y ago
That list is pretty terrible. 4 runners of the Boston marathon got brain cancer over ten years? Over 20,000 people finished the Boston marathon last year (http://www.bostonmarathon.org/2009/cf/public/statistics.htm http://www.bostonmarathon.org/2009/cf/public/statistics.htm). Even if we assume it's the same 20,000 people running every year for ten years (highly unlikely), an incidence of brain cancer of 4/20,000 is the same as the incidence in the general population 15-20 / 100,000. (http://www.oncologychannel.com/braincancer/index.shtml http://www.oncologychannel.com/braincancer/index.shtml). So, 4 people is about what you would expect. Given that it's not the same people, it's probably a good deal lower than the rest of the population.
It's pretty difficult to take anything on that list seriously if they're going to blatantly misrepresent statistics like that.
- kingkongreveng_ 17y agoMarathon running appears to cause heart damage. 12% of asymptomatic marathon runners had evidence of myocardial damage. Only 4% of the sedentary controls had damage. This Breuckmann study repeatedly found about a 2.5 to 1 increased incidence of heart attack from marathon running over sedentarism. The number of marathons run was an independent and significant predictor of the likelihood of myocardial damage. http://www.paleonu.com/panu-weblog/2009/11/1/cardio-causes-heart-disease.html http://www.paleonu.com/panu-weblog/2009/11/1/cardio-causes-h...
- xiaoma 17y agoLinking to a fringe paleo blog which is blind to mainstream research (unless it supports paleo!) isn't much better. The 2.5 to 1 increased incidence of heart attack from marathon running over sedentarism bit is BS, and flatly contradicted by studies already linked to on this thread.