I truly appreciate the time and effort Patsy has dedicated to providing a research/evidence based study into the effects of diet on IBS. Particularly when some/majority of GPs advice, where diet is concerned, is minimum or outdated. I think the FODMAP approach to diet, outlined in your excellent book, is a key component in the management of IBS symptoms. I've personally found it a useful tool, combined with complementary dietary, medication and lifestyle adaptations in the fight to control my IBS symptoms.