Dear Dr. Roach: I am a 74-year-old male, and I recently received a negative result from my mail-in fecal test. I have been on an every-five-years colonoscopy cycle for the past 20 years (noncancerous ...

The colon is part of the digestive system. It helps the body absorb water and nutrients from food before excreting the waste. It is made up of muscle and located just below the stomach. People ...