It is great to see you recognize fructose as another potential trigger in the list of possible triggers that all IBSers should consider when developing a management strategy.
Quote: My biggest problem has always been that I don't feel there is much science behind IBS
There is plenty of science behind IBS as witnessed by the hundreds of recently published research papers. The problem is that IBS is a complicated disorder involving the communication between two of the most complex organs in the body - the brain and the bowel. It may be many year before researchers have a full understanding of the disorder and how to treat it effectively. It is quite unlikely that IBS will be seen as simply a food allergy (or intolerance) related problem -- the research is simply not pointing that direction. So you don't have to worry about that too much However, research does show that while certain things such as whole grains, fat/oil, caffeine, fructose and lactose are not causes of IBS they can aggravate a sensitive bowel. Much of this is discussed in An Evidence-Based Systematic Review on the Management of Irritable Bowel Syndrome by the American College of Gastroenterology Task Force on IBS recently posted in the research library.
At the moment there are no miracle cures but we keep our fingers crossed that perhaps some day science will find one for us.
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS
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Re: my agenda
However, research does show that while certain things such as whole grains, fat/oil, caffeine, fructose and lactose are not causes of IBS they can aggravate a sensitive bowel. Much of this is discussed in 
