Javizy, just like a Candida infestation and the leaky gut syndrome, IBS is caused by a lack of intestinal flora or beneficial bacteria. You also need a good, easily digested fiber source to feed the flora. This is why such foods as rice bran flour and organic oat bran is so beneficial as they’re “soft” fibers and therefore less likely to cause irritation or more damage. Wheat fiber, on the other hand is considered a ‘hard’ fiber.
By the same token, bloating is more often than not caused by a lack of stomach acid leading to fermentation in the stomach. As the stomach acid is increased by populating the intestines with a plentiful supply of flora, the bloating normally decreases.
Also, low stomach acids can’t produce enough hydrochloric acid (HCL) and enzymes for proper the digestion of foods also leading to bloating. Because of this, you may want to consider taking a supplement of HCL for a while.
In addition, the Swedish Bitters, zinc, and yucca root may be able to help the problem.