A study has found that 35 to 50 years old who regularly run marathons are more likely to develop precancerous tumors in their colon, precursors of the disease.
This, if proved right, will make people stay indoor and be less active even more.
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A study has found that 35 to 50 years old who regularly run marathons are more likely to develop precancerous tumors in their colon, precursors of the disease.