Get screened

Screening is the most effective way to prevent colon cancer. Unlike many other cancers, colon cancer often starts as a precancerous polyp that can be found and removed right away through a scope during screening. Removing these polyps lowers the chance that cancer will develop later.

Early colon cancer and precancerous polyps usually do not cause symptoms. By the time symptoms appear, the disease may already be more advanced and harder to treat. Screening looks for hidden disease before it causes symptoms, which is why it is recommended even for people who feel healthy.

Experts advise that most adults at average risk begin colorectal cancer screening at age 45. Several screening tests are available, including stool-based tests and exams that look directly at the colon. Each test has different benefits, risks and testing schedules.

A commonly prescribed schedule for people at average risk is a colonoscopy every 10 years beginning at age 45. A colonoscopy lets your healthcare team look directly into your colon. It is considered the gold standard because it is the most sensitive test for colon cancer. And it has the added benefit of allowing your healthcare professional to remove precancerous polyps during the exam.

There also are less invasive screening tests. The best test is the one you will do and repeat as recommended.