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Stomach pain , gas , nausea

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I have had stomach pain, excess smelly gas, nausea, bloating and swelling of the upper stomach and greeny/brown stool for 3 months which is made worse by certain foods. My doctor says it is acid reflux but i have no heart burn/burning pain or any other symptoms. Could it be anything else?

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replied May 19th, 2010
Digestive and Bowel Disorders Answer A12211
Hi, welcome to the ehealth forum and I am glad to help you.
You seem concerned by the upper abdominal pain after certain foods along with gas, nausea, bloating for the last 3 months.
The stomach pain that occurs with foods could be due to peptic ulcer and associated acid reflux disease. Gas in the gastrointestinal tract has only two sources. It is either swallowed air or is produced by bacteria that normally inhabit the intestines, primarily the colon. Swallowed air is rarely the cause of excessive flatulence.
The usual source is the production of excessive gas by intestinal bacteria. The bacteria produce the gas (hydrogen and/or methane) when they digest foods, primarily sugars and polysaccharides (for example, starch, cellulose), that have not been digested during passage through the small intestine.
The starch in whole grains produces more gas than the starch in refined (purified) grains. Thus, more gas is formed after eating foods made with whole wheat flour than with refined wheat flour. This difference in gas production probably occurs because of the fiber (similar to a complex starch) present in the whole grain flour. Much of this fiber is removed during the processing of whole grains into refined flour.
Finally, certain fruits and vegetables, for example, cabbage, also contain poorly digested starches that reach the colon and result in the formation of gas.
You can consult your gastroenterologist to conduct upper GI endoscopy and evaluate you for malabsorption so as to reach the definitive diagnosis. Till that time, you can alleviate symptoms by avoiding the foods that trigger discomfort and pain as described above.
Hope this helps. Take care.
Note: This post is not to emphasise final diagnosis as the same cannot be made online and is aimed just to provide medical information and no treatment suggested above be taken without face to face consultation with health care professional.

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