Make a daily habit of swallowing low-dose aspirin. (Check with your doctor first.) You know it can help prevent heart attack, but did you know it may also prevent colon cancer? Although daily low-dose aspirin isn’t for everyone, new research suggests that middle-aged people on aspirin therapy may have as much as a 25 percent lower risk of developing colon cancer. In one study, aspirin cut the risk of cancer in the proximal colon, where it’s harder to detect, by 70 percent. Again, no one should start aspirin therapy without first consulting their doctor.