Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Plum fruit (commonly Prunus domestica, including prunes) is traditionally used to relieve constipation, a common symptom among some people with Irritable Bowel Syndrome (IBS), especially the constipation-predominant subtype (IBS-C). The evidence for plum use in IBS is primarily based on its high content of dietary fiber and sorbitol, a sugar alcohol with natural laxative effects. Several studies have demonstrated that prunes (dried plums) can improve stool frequency and consistency in individuals with constipation. For instance, a randomized controlled trial published in Alimentary Pharmacology & Therapeutics (2011) found that prunes were more effective than psyllium in increasing stool frequency in patients with chronic constipation.

However, while there is scientific evidence supporting the use of plums/prunes for constipation, direct studies assessing their efficacy specifically in IBS patients are limited. Some IBS patients, particularly those with IBS-D (diarrhea-predominant) or with sensitivity to FODMAPs (which includes sorbitol), may actually experience worsened symptoms such as bloating, gas, or diarrhea from plum consumption. Therefore, while the use of plum fruit in IBS is scientifically plausible for some patients (mainly IBS-C), the overall level of evidence is modest (rated 2/5), and use should be individualized.

In summary, plum fruit is scientifically validated for constipation, which overlaps with some IBS presentations, but caution and personalization are advised due to variable symptom triggers in IBS patients.

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