Story perspectives

Study Links High Precancer Rates to Endurance Running

8/27/2025

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Summary

Story summary

A 2025 study revealed high rates of precancerous growths in marathon and ultramarathon runners aged 35-50.
15% of participants had advanced adenomas, exceeding the general population's rate.
While no direct link to bowel cancer was established, further investigation is recommended.
Experts advise monitoring gut health and earlier screenings for endurance athletes.
The findings emphasize balancing exercise benefits with potential risks in extreme sports.

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Story summary

A 2025 study revealed high rates of precancerous growths in marathon and ultramarathon runners aged 35-50.
15% of participants had advanced adenomas, exceeding the general population's rate.
While no direct link to bowel cancer was established, further investigation is recommended.
Experts advise monitoring gut health and earlier screenings for endurance athletes.
The findings emphasize balancing exercise benefits with potential risks in extreme sports.