MICHAEL LIEBERMAN, MD: Diverticulosis is very common. The older our population gets, the more common it is to find diverticulosis on endoscopy or in imaging studies, such as CAT scans or barium enema. So it's very common.
DAVID R. MARKS, MD: But it may cause no symptoms.
MARK POCHAPIN, MD: That's right. In fact, it's usually just an incidental finding. In fact, when you start getting closer to the age of 60 and 70, it may not even be a disease, because more Americans have it than not. Over 50 percent will have that finding.
DAVID R. MARKS, MD: What causes that outpouching?
MARK POCHAPIN, MD: That's a really interesting question. People think it's our sort of poor American diet. Low fiber, high fat. Possibly the fact that we do have an older population. And also, some people think we just don't go to the bathroom enough, and that by holding fecal matter in, causes increased pressure, and these little pockets form.
DAVID R. MARKS, MD: When does diverticulosis actually become a problem?
MICHAEL LIEBERMAN, MD: Diverticulosis becomes a problem in two different scenarios. One is when the outpouchings become inflamed. That, many times, is due to small perforations in the outpouchings that set up an infection in the area of the perforation. That's called diverticulitis. The other scenario where it causes difficulty is with bleeding. There tends to be an association of diverticulosis and bleeding within the colon. Those are the two most common scenarios that we see problems, infection and bleeding.