Insights & Discussion
Gold kiwifruit supplementation increases the abundance of the beneficial gut bacterium Faecalibacterium, which could potentially enhance gut microbiota composition and reduce inflammation.
This research was conducted on two groups of participants: one healthy and the other suffering from Functional Constipation (FC). The groups, one containing 20 individuals (one of whom did not complete the study) and the other 9, were given ACTAZIN™ green (in doses of 2400mg and 600mg) and Livaux™ (2400 mg) gold kiwifruit supplements, as well as a placebo in the form of isomalt. The study design was a randomized cross-over structure carried out over 4 weeks, with 2 weeks washout periods between each stage. Changes in faecal microbiota composition and metabolism were assessed using 16S RNA gene sequencing and Gas Chromatography (GC), and colonic pH was measured via SmartPill wireless motility capsules.
The baseline measurements showed that the composition of the faecal microbiota differed significantly between the two groups, with certain bacterial taxa such as Bacteroidales markedly more abundant in the healthy group, while others, including Ruminococcaceae, were more prevalent in the FC group. The clearest change affected by the nutrient supplementation was an increase in Faecalibacterium abundance in the FC group following Livaux™ supplementation, a result observed in nearly all participants in this group. As lower proportions of Faecalibacterium are often linked with gastrointestinal disorders, this increase suggests that the supplements could offer a strategy for ameliorating these conditions.
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Fruits, especially kiwifruits, and rye bread can enhance bowel movements and help manage chronic constipation better than conventional dietary methods.
2023 Alimentary Pharmacology & Therapeutics Systematic review and meta‐analysis: Foods, drinks and diets and their effect on chronic constipation in adults Van Der Schoot A, Katsirma Z, Whelan K, Dimidi E
Review Article Constipation Fruits Kiwifruit
An exhaustive analysis was conducted incorporating a multitude of studies, including randomized controlled trials and uncontrolled trials, identified through electronic databases till 12th July 2023. The effect of various foods, drinks, and diets on characteristics such as stool output, gut transit time, symptoms, quality of life, adverse events, and compliance in adults with chronic constipation was inspected. The study also examined the response to different treatments and included a variety of foods such as kiwifruit, high-mineral water, prunes, rye bread, mango, fig, cereal, oat bran, yoghurt, water supplementation, prune juice, and high-fibre or no-fibre diets.
The synthesized data revealed that the consumption of fruits, particularly kiwifruits, and rye bread led to a higher stool frequency when compared to standard treatments like psyllium or white bread. High-mineral water also proved more effective regarding response to treatment than low-mineral water. On the other hand, no distinctive difference was identified for prunes when set against psyllium as a treatment option. Overall, the study insightfully suggests dietary modifications as a means to manage chronic constipation, emphasizing the potential of fruits such as kiwifruits and rye bread.
Kiwifruit polysaccharides may alleviate the toxic effects of acrylamide by improving gut health and enhancing bile acid metabolism.
2023 Frontiers in Nutrition Effects of kiwi fruit (Actinidia chinensis) polysaccharides on metabolites and gut microbiota of acrylamide-induced mice Chen M, Chen X, Wang K, Cai L, Liu N, Zhou D, et al.
Animal Study Bile Acid Gut Microbiota Kiwifruit
In this study, the team explored the potential protective effects of kiwifruit polysaccharides on disorders induced by acrylamide (a toxic ingredient found in high-temperature, carbohydrate-rich food) on gut microbiota and systemic metabolism. They measured changes in gut microbiota and serum metabolites in mice subjected to acrylamide-induced toxicity, focusing primarily on the effects on mice's bodily features, liver health, and liver enzyme activity.
The results revealed that treatment with kiwifruit polysaccharides not only improved the mice's overall health and liver function but also restored the balance in their gut microbiota by increasing microbial diversity and the abundance of beneficial bacteria. Furthermore, it was found that the polysaccharides had a significant impact on amino and bile acid-related metabolic pathways, proving their potential in protecting against toxicity. A strong correlation was also found between certain bacteria and the critical metabolites of bile acid metabolism, providing a deeper understanding of the protective mechanisms of kiwifruit polysaccharides.
Kiwifruit and kiwifruit extracts may have a positive impact on constipation in adults by increasing weekly bowel movements, reducing abdominal pain, and minimizing straining.
2022 Canadian Journal of Gastroenterology and Hepatology Kiwifruit and Kiwifruit Extracts for Treatment of Constipation: A Systematic Review and Meta-Analysis Eltorki M, Leong R, Ratcliffe EM
Systematic Review Constipation Kiwifruit
Kiwifruit and kiwifruit extracts show promise in increasing weekly bowel movements and reducing abdominal pain and straining in adults with constipation, although the overall evidence is of low certainty. However, kiwifruit may lead to minor adverse effects, such as bloating and flatulence, compared to placebo, indicating potential for its use as a dietary supplement in constipation management, especially in conjunction with other laxatives if necessary, but further research is needed to establish its effectiveness.
Consuming green kiwifruits is associated with a clinically relevant increase of ≥ 1.5 complete spontaneous bowel movements per week in those experiencing constipation.
2022 American Journal of Gastroenterology Consumption of 2 Green Kiwifruits Daily Improves Constipation and Abdominal Comfort—Results of an International Multicenter Randomized Controlled Trial Gearry R, Fukudo S, Barbara G, Kuhn-Sherlock B, Ansell J, Blatchford P, et al.
Randomised Controlled Trial Constipation Irritable Bowel Syndrome Kiwifruit
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.
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.
Two gold kiwifruit daily are as effective as fiber-matched psyllium in treating constipation in adults and should be considered as a treatment option.
2022 Nutrients Two Gold Kiwifruit Daily for Effective Treatment of Constipation in Adults—A Randomized Clinical Trial Bayer SB, Heenan P, Frampton C, Wall CL, Drummond LN, Roy NC, et al.
Randomised Controlled Trial Constipation Gold Kiwifruit Kiwifruit
This study provided evidence that habitual consumption of two gold kiwifruit daily, a realistic standard serving of fruit, is at least as effective as fiber-matched psyllium in lieu of placebo in treating constipation in adults, with fewer side effects, and offers greater ease of defecation through the improvement of stool consistency and reduction of straining.
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