Is malabsorption of fructose-sorbitol really important in the irritable bowel syndrome (IBS)?

Use and abuse of hydrogen breath tests

“…31 A Spanish study found more severe symptoms after intake of a fructose-sorbitol mixture in patients with functional gastrointestinal disorders than after intake of sucrose as a control solution 6 whereas we found similar symptoms in IBS patients with subjective fruit intolerance after intake of a fructose-sorbitol mixture versus glucose (control), irrespective of the presence of fructose malabsorption. 54 ''Malabsorption of fructose and/or sorbitol is not more frequent in IBS patients than in healthy subjects''…”