Colon cancer screening is recommended to start at age 45 instead of the current recommendation of age 50. Recent studies showing the rate of colorectal cancer rising in younger people. Screening is done by colonoscopy which requires cleaning your bowel the night before (many people find cleansing the bowel more unpleasant than the actual colonoscopy). If your colonoscopy is normal then you don't need another colonoscopy for 10 years, you will have peace of mind from colon cancer for that long. If you have family history of colon cancer you may have to satrt earlier.
Healthy eating with fresh fruits and vegetables instead of eating excess animal products and processed foods will reduce the risk for colon cancer.