[TangoLimaSierra]

Of course a colonoscopy doesn’t prevent colon cancer. However, it can help detect it by finding the polyps which may be cancerous a lot earlier than waiting until severe symptoms arise.

Article doesn't say colonoscopy was to prevent cancer. Did you read it?

[CFW]

"Article doesn't say colonoscopy was to prevent cancer. Did you read it?"

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Did you read the title of the article we are responding to?

"Colonoscopy-screening does not prevent colorectal cancer as well as previously assumed (Sample tests 18% less helpful)"