Inflammatory Bowel Disease

Inflammatory bowel disease is caused by psychological problems.

False.

Inflammatory bowel disease is the general name for two diseases that cause inflammation in the intestines, Crohn's disease and ulcerative colitis. The cause of the disease is unknown, but researchers speculate that it may be a virus or bacteria interacting with the body's immune system. No evidence has been found to support the theory that inflammatory bowel disease is caused by tension, anxiety, or any other psychological factor or disorder.

source: http://digestive.niddk.nih.gov/ddiseases/pubs//facts/index.htm