Colonoscopy is indicated for patients having symptoms concerning for colorectal cancer or inflammatory bowel disease. Screening colonoscopy is indicated for average risk patients at age 50. Newer guidelines recommend screening start at age 45 for African Americans. If a family member has had colorectal cancer or adenomatous polyps before the age of 60, it is recommended you start screening 10 years before their age at diagnosis. There are certain hereditary cancers that can occur earlier in life and screening recommendations may vary. Discuss these situations with your doctor.