Sunday, October 21
Poster Session: Professional Skills; Nutrition Assessment & Diagnosis; Medical Nutrition Therapy
Evaluation of Nutritional Adequacy and Symptom Improvement During Implementation of the Low-FODMAP Diet in Individuals with Irritable Bowel Syndrome

https://doi.org/10.1016/j.jand.2018.08.046Get rights and content

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Learning Outcome

Upon completion, participant will be able to identify the optimal period of time for the elimination phase of the low FODMAP diet and understand the potential nutritional inadequacies.

Research Outcome

This study aims to define the duration of the elimination phase for symptom relief and to assess the nutritional adequacy of a low-FODMAP diet.

Methods

Subjects attended a dietitian-led, education class prior to initiation of a 6-week, low-FODMAP diet. At baseline and bi-weekly, subjects completed an IBS-Symptom Severity Scale questionnaire (IBS-SSS). Diet assessments (3-day diet record) were collected at baseline and during week 2. Compliance was assessed by using high-FODMAP food checklists.

Analysis

Dietary intake analyzed using the Nutrition Data System for Research software, utilized paired samples t-tests and ANOVA with repeated measures to assess changes in nutritional intake and symptom severity, respectively. Significance was defined as p-value<0.05.

Results

Complete data was available for 15 of 35 subjects. All subjects (n=15) had a clinical response (reduction of 50 points on IBS-SSS) with the majority of symptom improvement between baseline and week two (n=13; p=0.001). There was a statistically significant reduction in grams of carbohydrates (p=0.031), grains (p=0.048) and dairy (p=0.010) while following a low FODMAP diet. Several micronutrients (calcium, iron, folate, vitamin C, and vitamin D) were below the recommended dietary allowance for

Conclusions

Our findings support a two-week elimination of FODMAPs may be optimal for achieving symptom relief. The high dropout rate and poor compliance highlight the need to assess and report dietary compliance in future interventions to gain insight into the efficacy of a low FODMAP diet.

Funding source

None

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