Diverticulosis Diverticulitis

"Diverticulosis is the presence of multiple sacs, usually in the large intestine. ...it may develop anywhere in the large intestine, but they are more common in the sigmoid colon, which is the last part of the large intestine just before the rectum...They are not common before the age of 40 but become more common rapidly afterward.

"The development of these sacs 'diverticula] is thought to be caused by spasms of the muscular layer of the intestine. The cause is unknown but may be related to a low-fiber diet or inadequate fluid intake.

"...The goal of treatment is usually to reduce the spasms, which is best achieved by maintaining a high-fiber diet (which consists of vegetables, fruits, and whole grains)* and drinking plenty of fluids. An increased bulk ' by the fiber]...reduces spasms, which in turn decreases the pressure on the walls of the large intestine.

"...Uncomplicated diverticulosis, in which a person has no evidence of inflammation, infection or complications, does not require surgery. If bleeding recurs often or if the source of the bleeding cannot be determined, surgery to remove most of the large intestine may be needed, but such surgery is not commonly done. All emphases are added.

From: The Merck Manual of Medical Information, 2003. Mark H. Beers, M.D., Editor-in-Chief. Drs. Merga, Bowman, Drossman, Tanser, et al., editorial board.

*Whole grains include brown rice, whole rye, barley, preferably not "pearl barley," soy beans and lentils. Editor's note.