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Redmond Regional Medical Center

Risk Factors for Inflammatory Bowel Disease

A risk factor is something that increases your likelihood of getting a disease or condition.

It is possible to develop inflammatory bowel disease with or without the risk factors listed below. However, the more risk factors you have, the greater your likelihood of developing inflammatory bowel disease. If you have a number of risk factors, ask your doctor what you can do to reduce your risk.

While scientists continue to search for the cause of inflammatory bowel disease, they have determined that certain genetic and environmental factors may increase the likelihood of developing the condition. Exactly why these factors add to the risk is not known at this time.

Risk factors include the following:

Genetic Factors

Having a family member with inflammatory bowel disease increases your chances of getting the disease.

Ethnic Background

Caucasians are more likely to develop both types of inflammatory bowel disease. People of Jewish heritage are at greater risk of Crohn’s disease.


Smoking adds to the risk for Crohn’s disease, but seems to lower the risk of ulcerative colitis. In addition, former smokers are at greater risk than nonsmokers.

Socioeconomic Factors

Inflammatory bowel disease seems to occur more often among people in higher socioeconomic classes and people with white-collar jobs.


Having a diet that is high in fat, sugar, and meat may increase your risk of Crohn's disease and ulcerative colitis.

Revision Information

  • Reviewer: Daus Mahnke, MD
  • Review Date: 09/2015 -
  • Update Date: 09/17/2014 -
  • Crohn's disease in adults. EBSCO DynaMed website. Available at: Updated August 17, 2015. Accessed October 1, 2015.

  • Hou JK, Abraham B, El-Serag H. Dietary intake and risk of developing inflammatory bowel disease: a systematic review of the literature. Am J Gastroenterol. 2011;106(4):563-573.

  • Ulcerative colitis. EBSCO DynaMed website. Available at: Updated August 21, 2015. Accessed October 1, 2015.

The health information in this Health Library is provided by a third party. Redmond Regional Medical Center does not in any way create the content of this information. It is provided solely for informational purposes. It does not constitute medical advice and is not intended to be a substitute for proper medical care provided by a physician. Always consult with your doctor for appropriate examinations, treatment, testing, and care recommendations. Do not rely on information on this site as a tool for self-diagnosis. If you have a medical emergency, call 911.