Will Running a Marathon Make You Skinny? A Surprising Answer is Not Necessarily

The marathon is the iconic distance shrouded in mystery, and crowned with glamor. Just finishing it is considered an accomplishment.  At one time it was widely believed that just running a marathon would make you immune from a heart attack, and this belief was widely held until running evangelist Jim Fixx, and best selling author of The Complete Book of Running, died of a heart attack – while running:

Fixx often quoted California pathologist Tom Bassler who stated that any nonsmoker who could run a marathon in under four hours would never die from a heart attack.

www.villages-news.com/remembering-running-guru-jim-fixx/

So, can people run marathons without necessarily losing weight?  The study is small, the exact implications are not clear, but fitness researcher Mary Kennedy of the Harvard Medical School was surprised to find  that for whatever reason some people who run marathons will not necessarily loose. weight. There are many breathless iterations of this story on the web, and I have not been able to find the original research, but New York Magazine’s “The Science of Us” web page carried the most reasonable version of the story stripped of the sensationalism. Here is a quote from that story:

She conducted a small, simple pilot study, limited to her group of 64 charity runners, comparing their weight before starting the training program to their weight after completing it. About 11 percent of them did lose weight, but just as many gained weight (and of those who gained, 86 percent were women). But for the remaining 78 percent, their weight stayed almost exactly the same, even after three months of running four days a week.

This summer Runners World ran a remarkable article about Mirna Valerio who is a 250 lb, and they actually use the term, “obese runner.”  She is a distance runner who also runs the occasional marathon.  You can read the story here:  http://www.runnersworld.com/runners-stories/ultra  and I urge you to visit her  interesting blog Fat Girl Running.

So now we know that running marathons does not guarantee that you will not have a heart attack, and there continues to be reports of runners who look fit, but who die while running like my friend and mentor Arne Richards, of whom Joe Henderson has written so movingly.

We need to understand that being thin, my friend Arne was very thin with practically no body fat when he died while running at age 42, does not guarantee being physically fit or healthy. Same thing applied to Jim Fixx.  Conversely, we need to understand that running long distances is no guarantee of shedding pounds.  It is more complicated than that.

A life of holistic moderation lived mindfully is the target that I am aiming for.  That includes a good diet, adequate sleep, reducing stress, and an exercise regime that is backed by empirical evidence rather than wishful, and simplistic, thinking.  All of these things work together.  I will close now by referring you to an article in Women’s Running by Rachel Cosgrove which is simply outstanding.  It is entitled Weight Loss Fact and Fiction.  Please read it.

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