However, discomfort in the abdomen for any reason also may lead to excessive belching. Therefore, belching does not always indicate the presence of excessive gas in the stomach. It is not difficult usually to differentiate between excessive gas in the stomach and other causes of excessive gas. If the problem is gas in the stomach, belching brings relief.
http://www.medicinenet.com/intestinal_gas_belching_bloating_flatulence/article.htm
Chronic bloating occurs when gas builds up in the abdominal cavity and/or intestines with the inability to expel the gas with flatulence or belching. This can lead to pain in the abdomen that may start out as mild but intensify and become very sharp and uncomfortable.
http://www.med-health.net/Chronic-Bloating.html
Excess gas may be a symptom of a more serious chronic condition. Examples include diverticulitis or an inflammatory bowel disease, such as ulcerative colitis or Crohn's disease. Excess gas and bloating may also be a symptom of bacterial overgrowth in the small intestine from conditions such as diabetes.
http://www.mayoclinic.org/diseases-conditions/gas-and-gas-pains/basics/causes/con-20019271
Abdominal pain is not a common symptom of people with excessive gas although the discomfort of bloating may be described as pain. Cramps and severe pain suggest causes other than gas, for example, intestinal obstruction that also can lead to abdominal distention and discomfort.
http://www.medicinenet.com/intestinal_gas_belching_bloating_flatulence/article.htm
Fiber has many health benefits, including keeping your digestive tract in good working order and regulating blood sugar and cholesterol levels. But fiber can also lead to the formation of gas. High-fiber foods that commonly cause gas and gas pains include:
http://www.mayoclinic.org/diseases-conditions/gas-and-gas-pains/basics/causes/con-20019271
Gas and bloating occur when bacteria in the intestines digest the sugars and starches we eat. Different bacteria produce different levels of gas so, when our intestinal bacteria (flora) are out of balance we can have more of the bacteria that produce high levels of gas and this will cause more bloating.
http://apathtonaturalhealth.com/is-candida-overgrowth-causing-your-chronic-gas-bloating/
Eating fibrous foods like beans, cabbage, and cauliflower can produce more gas because of your gut bacteria’s inability to fully digest them. If you’re prone to gas, you may want to take a look at your overall fiber intake!1. Swallowing too much air is the #2 cause of gas and bloating – pun intended. Avoid eating too quickly, chewing gum, smoking, sucking on hard candy, or drinking through straws. Activities that lead to more instances of swallowing air can produce more gas as the air gets caught in your stomach.1.
https://www.gas-x.com/about-gas-and-bloating/causes/
Causes of Intestinal Bloating. There are several reasons you can get chronic gas and bloating other than Candida, here are just a few: Constipation or sluggish bowel movements. When you don’t have a bowel movement regularly all the undigested food particles, bacteria and waste in your intestines produce more gas.
http://apathtonaturalhealth.com/is-candida-overgrowth-causing-your-chronic-gas-bloating/
There are a few other causes of chronic bloating: 1  High Fat food. These digest more slowly and will cause you to feel bloated and full. 2  Emotional conditions like anxiety, depression and stress. 3  History of smoking.  Infections in the gastrointestinal tract, digestive diseases or blocked intestine.
http://www.med-health.net/Chronic-Bloating.html
While the exact cause is still unknown, irritable bowel syndrome affects a large number of people. This disorder causes abnormally strong contractions of the lining of the colon as food moves through. People with this experience symptoms such as; excessive mucous in bowel movement, gas, bloating and abdominal cramps.
http://www.med-health.net/Chronic-Bloating.html
what causes constant bloating and gas
Diabetes causes constant bloating and gas.