Can too much running cause colon cancer? New study raises questions about extreme training
A study led by oncologist Dr. Timothy Cannon suggests a potential link between extreme endurance running and an increased risk of precancerous colon polyps. The research theorizes that repeated gut ischemia during long-distance events may contribute to cellular damage.
Why it matters
It raises important health questions for the endurance athlete community regarding the long-term physiological impacts of extreme training.
After seeing three marathoners with colon cancer in a span of about six months, oncologist Dr Timothy Cannon could not help but wonder if it was more than a coincidence.
The article presents a scientific hypothesis and study results without drawing definitive conclusions.
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