Generally, daily aspirin is recommended for heart disease risk reduction, Cook said. However, "the Physicians' Health Study showed a benefit for alternate day, but the dose was 325 milligrams of regular aspirin," she added.
This year, more than 102,000 new colon cancers and more than 40,000 rectal cancers will be diagnosed, the American Cancer Society estimates.
To learn more about colorectal cancer risk factors, visit the American Cancer Society.
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