Irritable bowel syndrome, or IBS, is a digestive disorder isolated to the large intestines. It means that a portion of your intestinal tract doesn't function properly. This disorder doesn't have anything to do with structural problems but more the passage of waste, which causes uncomfortable symptoms such as gas, bloating, abdominal cramping, pain, diarrhea and constipation. A number of factors are known to contribute to this condition, but your weight isn't one of them.
Weight
Of all the potential causes for irritable bowel syndrome, the National Institute of Diabetes and Digestive and Kidney Diseases doesn't list weight as a risk factor. Unlike gastroesophageal reflux disease, which can worsen as a result of being overweight or obese, excess weight doesn't contribute to IBS. The most likely culprits are heredity, stress, food sensitivities and motility issues affecting the muscles of the large intestines. Even bacterial infections can trigger IBS in some people.
Diet
Nonetheless, your diet can have an impact on this condition. According to the Mayo Clinic, most people with IBS can experience a flare-up after eating certain foods, making dietary modifications a vital facet of treatment. Limiting your intake of dairy and other gas-forming foods -- such as lentils, beans, split peas, broccoli, cauliflower and cabbage -- can sometimes avert IBS symptoms. Foods high in fat or containing artificial sweeteners can also be problematic. Even chocolate, caffeine and alcohol are known to result in gas, bloating and other symptoms of IBS. However, people respond differently to dietary changes, and you may find that other foods worsen IBS. Avoid them whenever possible.
Eating Habits
Besides dietary modifications, IBS often responds favorably to changes in your eating habits. Eating at regularly scheduled times can help regulate bowel function, notes MayoClinic.com. This may minimize flare-ups. Try eating smaller meals regularly throughout the day to limit the amount of waste in your intestinal tract, potentially avoiding symptoms.
Medications
If dietary changes fail to improve IBS, consult your doctor about possible medication. Two of the most popular include alosetron and lubiprostone. Anticholinergics or anti-diarrheal drugs can also help.
Weight Loss
Some people suffer symptoms of IBS along with unintentional weight loss. Symptoms of IBS coupled with weight loss are likely the result of bowel inflammation, says the National Institute of Diabetes and Digestive and Kidney Diseases. This is completely different than IBS and may be caused by ulcerative colitis, Crohn's disease or another inflammatory bowel disease. Consult a doctor to help determine the appropriate course of treatment.
