I just saw my internist and he adamantly said I need to go for a colonoscopy even though my exam and blood work were normal . I am 55 years old and have run 30 or miles a week for the past 35 years . I am as healthy as anyone and there is no history of colon cancer in my family . Do I really need this test ?
Question: Why might I feel this way about the test ?
The answer to the above question:


I exercise regularly and have no family history of the condition so I am confused why I need the test .