List of IBS Foods

Twenty-five percent of those with irritable bowel syndrome experience diet-related symptoms, researchers at the University of North Carolina School of Medicine reported in 2009 in the Journal of the American Dietetic Association. Symptoms of IBS vary but can include abdominal pain, cramping, diarrhea, constipation, bloating and gas. Those with IBS do not need to follow a strict diet, but they should be aware of foods that can alleviate or aggravate symptoms.

Fiber

Fiber is an essential nutrient that benefits the heart and supports regular bowel movements. There are two types of fiber--soluble and insoluble. Soluble fiber slows digestion, dissolves in water and is in fruits, vegetables, white rice, oatmeal, nuts, seeds and some grains. Insoluble fiber is in whole grains, popcorn and dried beans. Insoluble fiber adds bulk to stool, which moves it more quickly through the intestines. The North Carolina School of Medicine researchers found that those with IBS often experienced worsened symptoms with insoluble fiber and that soluble fiber could ease constipation. Soluble fiber dissolves in water to form a gel-like substance that softens hard stools and adds bulk to stool to help it move through the intestines, according to the National Institutes of Health.
High-fiber diets have been associated with gas, bloating and constipation. The Mayo Clinic suggests experimenting with different types of fiber and adding it to the diet gradually with plenty of fluids to minimize side effects. People who cannot tolerate high-fiber diets may consider taking fiber supplements, which tend to cause less gas and bloating.

Beverages

Those with IBS need to drink eight to 10 cups of water or fluid a day to avoid dehydration and constipation. The National Institutes of Health recommends avoiding beverages with alcohol, caffeine and carbonation because they may aggravate IBS symptoms.

Probiotics

Probiotics are live bacteria that are believed to benefit health. The Mayo Clinic says people with IBS may benefit from adding "good" bacteria like probiotics to their diet to relieve symptoms. Probiotics can be found in yogurt and dietary supplements.

Fatty Foods

The International Foundation of Functional Gastrointestinal Disorders warns that high-fat meals may cause cramping and diarrhea associated with IBS. It encourages naturally low-fat foods such as fruits, vegetables, lean meats, poultry, fish and nonfat dairy products to minimize symptoms.

Additional Foods

Other foods that may worsen IBS include chocolate, artificial sweeteners, dairy products such as milk and cheese, chewing gum and gas-producing foods including cabbage, cauliflower, beans and broccoli. The Mayo Clinic recommends eating regularly to support normal bowel function. Those with diarrhea may benefit from eating small, frequent meals, and those who are constipated may need to increase dietary fiber. The University of Maryland Medical Center says herbs such as peppermint oil and Chinese herbs may relieve symptoms of IBS. Consult a physician before starting herbal treatments; the success of herbs is often based on anecdotal evidence without scientific proof.