The Study
Gut Microbiota Modulation by Pomegranate Extract: Insights from a Controlled Supplementation Study
This study is like testing how pomegranate juice affects bacteria in a jar that mimics your gut. It shows what happens in the jar, but we don’t know if it works the same way inside a real person.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists tested pomegranate extract in a lab model that acts like a human colon to see if it changes the bacteria and chemicals they make.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 550 / 100
Quality score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Key takeaways
Summary
Based on the study abstract and findings.
- 1These changes suggest pomegranate might help balance gut bacteria in ways that could support gut health, but it didn't boost the main healthy gut fats.
- 2After one week of taking 2.6 grams of pomegranate extract daily, good bacteria diversity went up, bad bacteria like Enterocloster and Prevotella went down, and lactate levels dropped — but healthy fats (SCFAs) didn't change.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Plant Foods for Human Nutrition
Year
2025
Authors
Sarah Lebrun, S. Crèvecoeur, B. Taminiau, Nadia Everaert, Massimo Marzorati, Justine Leenders, Pascal de Tullio, Nicolas Korsak, G. Daube, Bruno Stiernon, V. Delcenserie, Irma Gonza
Related Content
Claims (6)
Consuming colorful plant foods provides polyphenols that directly increase the activity and diversity of gut microbes.
In a laboratory model of the human colon, taking 2.6 grams of pomegranate extract daily for one week resulted in lower levels of L-lactate and D-lactate in the transverse colon and lower D-lactate in the ascending colon, reflecting a change in microbial fermentation activity.
When pomegranate extract is added to a lab model of the human colon, the abundance of Prevotella bacteria decreases in the ascending and transverse colon, and propionate production decreases in the transverse colon.
In a lab model of the human colon, a higher dose of pomegranate extract increased the levels of a specific gut bacterium called Mitsuokella in two colon regions, while a lower dose reduced it in one region.
In a lab model of the human colon, taking 2.6 grams of pomegranate extract daily for one week resulted in higher bacterial diversity and lower levels of Enterocloster bacteria in the descending colon.
When pomegranate extract was added to a laboratory model of the human colon, the levels of short-chain fatty acids and succinate did not change.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.