In the last 5 years there has been alot of progress in IBS research, namely the discovery that the low FODMAP diet can effectively treat the condition. This treatment method has been widely studied and confirmed. A dietitian is recommended to administer it properly because it eliminates alot of different foods and is far more complex than just avoiding gluten, for example.

The theory is that certain bacteria fermet FODMAPs into gas, water and other substances which cause the various symptoms of IBS.