My father had stage 2b colon cancer, do i have to undergo colonoscopy at a later age? what age is advised?

What genetic risk?: There are now recognized multiple distinct biologic pathways that lead to colon cancer. Depending upon the age & location of the cancer(s) in your first generation relatives, you may be at higher risk. Another consideration relative to needing earlier re-colonoscopy is your present clinical course--do you have colitis, bleeding, change in bowels, weight loss, abdominal pain? Check with your doc.

Yes: In the United Stated we recommend the first colonoscopy at age 50 then every 5 years provided nothing was notable like polyps or medical condition like ulcerative colitis I would recommend since a parent had colon ca you follow the course life long.