At a high enough level fructose malabsorption occurs for everyone. However, some people can tolerate 30, 40 or more grams of excess fructose while others cannot tolerate 5 excess grams. Excess fructose is not digested by the body but it is fermented in the colon by bacteria producing gases and by products. The extra sensitivity of an IBSer's colon to things such as increase pressure from gas may cause discomfort. I believe I have explained this to you a couple of times over the past few years
-------------------- STABLE: ♂, IBS-D 50+ years - Science of IBS