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The Washington Post
washingtonpost.com
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Running ultras or multiple yearly marathons involves hours of exertion, much of it at a draining pace.
A small study found a surprisingly high incidence of precancerous polyps in young extreme runners, sparking controversy and concern.
https://www.washingtonpost.com/wellness/2026/05/21/marathons-ultramarathons-may-be-linked-colon-cancer-heres-why/?utm_source=social&utm_medium=social&utm_campaign=avs-redhot&utm_content=day2-social
2026-05-22T23:15:06.264Z