The cause of the inflammatory bowel diseases (IBD), ulcerative colitis, and Crohn's disease, is not known. Studies suggest they are caused by a combination of things, including genes, environmental factors, and problems with the immune system.
There is strong evidence to suggest a genetic basis for IBD, including:
The term inflammatory bowel disease (IBD) describes a group of disorders in which the intestines become inflamed. The likeliest cause is an immune reaction the body has against its own intestinal tissue.
Two major types of IBD are ulcerative colitis and Crohn's disease. Ulcerative colitis is limited to the colon or large intestine. Crohn's disease, on the other hand, can involve any part of the gastrointestinal tract from the mouth to the anus. Most commonly, though, it affects the small intestine...