Many patients who have been given the non-descript diagnosis of irritable bowel syndrome (IBS) routinely notice that eating healthy foods such as many different types of vegetables and fruits, causes an increase in their symptoms - abdominal bloating, abdominal discomfort, burping, flatulence, heartburn, nausea, and poor quality bowel movements. Whole grains, although not considered healthy for many people, also seem to cause an increase in these symptoms.