I was 21 when I had my first colonoscopy. It was a wake-up call that I needed to change my lifestyle.

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Patient sitting on a hospital bed.
The author (not pictured) had her first colonoscopy at age 21. The recommended age is 45.

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Doctors baffled after spotting a fly inside a Missouri man's intestines during a routine colonoscopy

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A fly.
A fly.

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