Measuring Diet Intake and Gastrointestinal Symptoms in Irritable Bowel Syndrome: Validation of the Food and Symptom Times Diary.

For participants with IBS-D, there was a nonsignificant trend for a higher percentage of abdominal swelling, abdominal fullness, and abdominal bloating symptoms after a meal containing FODMAP, compared with a meal not containing FODMAP for which symptoms arose.

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Secondary analyses of food intake in relation to gastrointestinal symptoms were underpowered but mostly trended in the anticipated direction; FODMAPs consumed at a meal showed a trend for a greater percentage of symptoms arising after the meal for participants with IBS-D, and fiber intake was correlated with symptom duration in participants with IBS-C.

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