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Supplementing dietary fibres with a low-FODMAP diet in irritable bowel syndrome: A randomized controlled crossover trial

0 2 years ago

In irritable bowel syndrome (IBS) patients, concomitant supplementation of fibres during initiation of a low-FODMAP diet (a diet low in fermented oligosaccharides, disaccharides, monosaccharides and polyols) did not change symptomatic response but increased stool bulk as well as normalized low stool water content and slow transit.

  • In this double-blind crossover trial, 26 IBS patients were randomized to 1 of 3 low-FODMAP diets varying only in total fibre content: control, 23 g/d; minimally fermented sugarcane bagasse 33 g/d; or fibre combination (sugarcane bagasse with resistant starch) ∼45 g/d.
  • At baseline, the median IBS Severity Scoring System total score was 305; all diets decreased median scores by >50 with no disparities in rates of symptom response between the diets: control (57%), sugarcane bagasse (67%), fibre combination (48%).
  • Fibre-supplemented vs control diets provided ∼50% higher stool output.
  • Sugarcane bagasse as a supplement led to normalization of both low stool water content and slow colonic transit during the control diet.
  • There were no additional symptomatic benefits of resistant starch over sugarcane bagasse alone.


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