Crohn's Disease

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Causes and Risk Factors

The cause for Crohn's disease is unknown, but researchers are studying several possibilities. The most widely-accepted theory centers on the immune system, which does not appear to function properly in patients who have the disorder.

When certain usually benign substances (e.g., foods, bacteria) enter the intestinal tract, the immune system mistakenly identifies them as harmful substances and tries to destroy them. White blood cells, which fight foreign substances...Read the full article