Risk factors
By Mayo Clinic staffMany people have occasional signs and symptoms of irritable bowel syndrome. However, you're more likely to have IBS if you:
- Are young. IBS symptoms first appear before the age of 35 for about half of those with the disorder.
- Are female. More women than men are diagnosed with this condition.
- Have a family history of IBS. Studies have shown that people who have a first-degree relative — such as a parent or sibling — with IBS are at increased risk of the condition. It's not clear whether the influence of family history on IBS risk is related to genes, to shared factors in a family's environment, or both.
References
- Irritable bowel syndrome. The National Digestive Diseases Information Clearinghouse. http://digestive.niddk.nih.gov/ddiseases/pubs/ibs/ibs.pdf. Accessed June 7, 2011.
- Kahn S, et al. Diagnosis and management of IBS. Nature Reviews Gastroenterology and Hepatology. 2010;7:565.
- Frequently asked questions. International Foundation for Functional Gastrointestinal Disorders. http://www.aboutibs.org/site/about-ibs/faq. Accessed June 7, 2011.
- Irritable bowel syndrome (IBS). The Merck Manuals: The Merck Manual for Healthcare Professionals. http://www.merck.com/mmpe/sec02/ch021666/ch021666a.html. Accessed June 7, 2011.
- Wald A. Treatment of irritable bowel syndrome. http://www.uptodate.com/home/index.html. Accessed June 7, 2011.
- Wald A. Pathophysiology of irritable bowel syndrome. http://www.uptodate.com/home/index.html. Accessed June 7, 2011.
- Videlock EJ, et al. Irritable bowel syndrome: Current approach to symptoms, evaluation, and treatment. Gastroenterology Clinics of North America. 2007;36: 665.
- Camilleri M, et al. Current medical treatments of dyspepsia and irritable bowel syndrome. Gastroenterology Clinics of North America. 2010;39:481.
- Dorn SD. Systematic review: Self-management support interventions for irritable bowel syndrome. Alimentary Pharmacology and Therapeutics. 2010;32:513.


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