You could direct him to the International Foundation for Functional Gastrointestinal Disorders' About IBS web site. In the first paragraph it says "There's no single treatment or cure". You might also invite him to view many of the excellent video interviews with IBS experts
Say - have you discussed using the FODMAP approach along with Heather's diet with your GI doc? There is a brief introduction to it in the first link in my signature. The second link is to an article written for physicians which you might give to your doctor. It has been very useful for me.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS
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Re: 100% IBS Diet for 6 Months - Still having Bad Days Frequently
