Aspirin reduced the risk of colorectal cancer or colon polyps in people who had previously had the disease or polyps. However, researchers stopped short of advising people to take aspirin to prevent colorectal cancer.
Researchers are looking for medications that have aspirin’s benefits without its side effects. Until they find one (and even when they do), eat red meat infrequently, eat plenty of fruits and vegetables, make sure you’re physically active, take a multivitamin with folic acid, and get a colonoscopy at least every ten years starting at age 50.
(Source: Nutrition Action Health Letter, June 2003, Volume 30/Number 5.)