Dr Roland Valori, editor of Frontline Gastroenterology, said of the first 100 of his patients treated, symptoms improved significantly for nine in 10.
He said that although previous research has shown hypnotherapy is effective for IBS sufferers, it is not widely used.
This may be because doctors simply do not believe it works. However, research has shown repeatedly that hypnosis is very effective. One of the pioneers is Professor Whorwell, who treats patients at the South Manchester Hospital.