Colonoscopy plays a critical role in the early detection of bowel cancer. For individuals without risk factors, routine colonoscopy screenings are recommended to begin between the ages of 45-50. However, those with a family history of colon cancer or other high-risk factors may need to start screenings at an earlier age. The frequency of colonoscopy repetition varies depending on the findings of the procedure and the patient's personal risk factors. Generally, in cases where no significant abnormality is found or where removed polyps are low-risk, a follow-up colonoscopy is recommended at 5-year intervals. However, factors such as the number, type, and size of polyps, or inadequate bowel preparation during the colonoscopy, significantly influence the follow-up frequency. In situations where a complete evaluation could not be performed, a repeat colonoscopy may be necessary within one year. For individuals with inflammatory bowel diseases such as ulcerative colitis or Crohn's disease, the frequency of colonoscopy follow-up should be determined by their gastroenterologist with a personalized approach.