Gas is caused by swallowing air and the breakdown of food in your digestive tract. The consequences are usually burping, feeling bloated, or passing gas. On average, most people pass gas at least 14 times per day. Some people have more gas than others, which may be uncomfortable or embarrassing.
The primary symptoms of IBS are abdominal pain or discomfort in association with frequent diarrhea or constipation and a change in bowel habits. There may also be urgency for bowel movements, a feeling of incomplete evacuation (tenesmus), bloating, or abdominal distension.
IBS and diet. A few changes in your diet may help ease IBS with diarrhoea. Avoid those foods that you identify as symptom-triggers. Common foods that may cause diarrhoea include: Wholemeal bread and wholegrain cereals, nuts. Bran and fibres eg isphagula husk, wheat bran. Magnesium and vitamin C high dose supplements.