Gearry R, Fukudo S, Barbara G, et al. Consumption of 2 Green Kiwifruits Daily Improves Constipation and Abdominal Comfort-Results of an International Multicenter Randomized Controlled Trial. Am J Gastroenterol. 2023 Jan 9. doi: 10.14309/ajg.0000000000002124. (Original study)

INTRODUCTION: Consumption of green kiwifruit is known to relieve constipation. Previous studies have also reported improvements in gastrointestinal (GI) comfort. We investigated the effect of consuming green kiwifruit on GI function and comfort.

METHODS: Participants included healthy controls (n = 63), patients with functional constipation (FC, n = 60), and patients with constipation-predominant irritable bowel syndrome (IBS-C, n = 61) randomly assigned to consume 2 green kiwifruits or psyllium (7.5 g) per day for 4 weeks, followed by a 4-week washout, and then the other treatment for 4 weeks. The primary outcome was the number of complete spontaneous bowel movements (CSBM) per week. Secondary outcomes included GI comfort which was measured using the GI symptom rating scale, a validated instrument. Data (intent-to-treat) were analyzed as difference from baseline using repeated measures analysis of variance suitable for AB/BA crossover design.

RESULTS: Consumption of green kiwifruit was associated with a clinically relevant increase of = 1.5 CSBM per week (FC; 1.53, P < 0.0001, IBS-C; 1.73, P = 0.0003) and significantly improved measures of GI comfort (GI symptom rating scale total score) in constipated participants (FC, P < 0.0001; IBS-C, P < 0.0001). No significant adverse events were observed.

DISCUSSION: This study provides original evidence that the consumption of a fresh whole fruit has demonstrated clinically relevant increases in CSBM and improved measures of GI comfort in constipated populations. Green kiwifruits are a suitable dietary treatment for relief of constipation and associated GI comfort.

Discipline Area Score
Family Medicine (FM)/General Practice (GP) 6 / 7
General Internal Medicine-Primary Care(US) 6 / 7
Gastroenterology 6 / 7
Comments from MORE raters

Gastroenterology rater

We need more trials of simple dietary interventions for gut disorders. Great to see this.

General Internal Medicine-Primary Care(US) rater

What a fun study!

General Internal Medicine-Primary Care(US) rater

Nice to know that 2 kiwi fruit a day keeps the gastroenterologists away. Potential adverse event effects specifically related to potassium levels was not available. That effect should be considered with some caution if recommending this diet therapy for patients with advanced renal failure or patients taking potassium sparing medications.
Comments from EvidenceAlerts subscribers

Mr. marc mittag (1/17/2023 6:01 AM)

Funded by New Zealand?