IBS is not IBS. There are different types and each one has different solutions.
I have the book IBS the essential guide to irritable bowel syndrome its causes and treatments from Professor John Hunter. I can recommend the book to you.
If you have an IBS with constipation you will do fine with the diet here. But there is much more to the subject and I think you should get the book.
People with an overflow/malnutrition and diarrhoea IBS should NOT follow the diet here.
Thomas, I have IBS-D. How come it’s not good for me to follow the diet? I’d be happy if you could develop your statement a bit.