At the University of Iowa, an Unusual Treatment for 2 Chronic Diseases

What it is: A method for treating inflamed-bowel disease and Crohn's disease by having patients ingest the eggs of intestinal worms. The diseases -- which result when the bowel's immune system reacts too vigorously to normal intestinal bacteria -- often cause diarrhea, stomach cramps, and sore joints.

The market: About one million people suffer from inflamed-bowel disease in the United States alone. Patients usually develop these diseases in their late teens or early 20s and

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