What Is Fructose Malabsorption (FM)?

Human intestine can’t absorb unlimited amount of fructose, but most people can absorb 25-50 g of fructose per sitting (1). By definition, inability to absorb 25 g of fructose per sitting is considered as fructose malabsorption. Unabsorbed fructose may cause diarrhea and bloating.

Fructose malabsorption (FM) was previously known as ‘dietary fructose intolerance’ (DFI), but this term should be avoided to prevent confusion with hereditary fructose intolerance (HFI).


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