Leeches and maggots have their medical uses; why not intestinal worms? From Worm Eggs Improve Bowel Disorder:
Ingesting the eggs of Trichuris suis, an intestinal worm, appears to be a safe and effective treatment for active ulcerative colitis, new research shows.
Too much information:
Ulcerative colitis is a common inflammatory disease of the colon that causes bloody diarrhea and heightens the risk of colon cancer.
How do the worms work?
Treatment with parasitic worms or “helminths” seems to work by altering the body’s immune system, according to the report in the journal Gastroenterology. Animal studies have shown helminth therapy to have a beneficial effect on colon inflammation.