Irritable Bowel Syndrome Message Boards | Re: Question about fructose study

Hi,

1. Individual sensitivities vary. It is something you have to figure out for yourself.

2. In your point #3 you talked about excessive fructose load from 'high' amount of sucrose. I have not seen anything in the research to indicate what amount is considered 'high' enough to cause problems. I expect it is the many tens of grams of sucrose per day.

It is the 'extra mile' that makes the difference. Every molecule of fructose in a food that is not accompanied by a molecule of glucose is metabolized in a different way than when it is accompanied by glucose. The malabsorption occurs in this alternative metabolic mechanism. There is a good description of on page 56 of the reference below. You may find other things of interest in the article too.

You can determine your sensitivity to excess fructose by eliminating foods with more fructose than glucose for a couple of weeks. And then try introducing things like melons, applesauce, honey, etc and see what happens. Who knows you might not be sensitive at all.

Reference
Barrett, J. S. & Gibson, P. R. Malabsorption of Fructose and Other Short-chain Carbohydrates. Practical Gastroenterology (2007).

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