The Study
Red Wine Grape Pomace Restores Gut Barrier Function and Improves Survival in Diet-Induced Ischemic Heart Disease
This study gave mice a special grape waste powder and saw that more of them lived longer and had healthier guts. But it doesn't prove the powder caused those changes—maybe something else did. It's like noticing your plant grows better when you talk to it—you can't say talking made it grow, just that they happened together.
Analysis score
Maximum 72 for a cohort study.
Where the score came from
Scientists fed mice with bad hearts a special powder made from grape skins and seeds after making wine, and saw they lived longer and had healthier guts.
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 516 / 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.
- 1If this worked in humans, it could mean a new way to help heart patients live longer by fixing their gut — not just lowering cholesterol.
- 2Mice on grape waste lived 36 days instead of 23.5 days; gut leakiness dropped by 68% (FITC-dextran), bad toxins (LPS) dropped by 49%, and gut sealant (ZO-1) improved; inflammation (IL-1β) dropped by 89%.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Antioxidants
Year
2025
Authors
Katherine Rivera, L. González, Laura Parra, J. E. Oyarzún, Alina Concepción-Alvarez, A. D. de Camargo, R. Bridi, A. Rigotti, M. Andía
Related Content
Claims (5)
In mice genetically predisposed to severe heart disease and fed a harmful diet, adding red wine grape pomace to their food extended their average lifespan from 23.5 to 36 days.
In mice with a genetic form of ischemic heart disease and a compromised gut barrier, supplementation with red wine grape pomace lowered markers of intestinal leakage, including plasma FITC-dextran and LPS, indicating a tighter gut barrier.
In mice with a specific genetic mutation and diet-induced heart disease, supplementation with red wine grape pomace reduced inflammation and scarring in the colon, increased colon length from 6.75 cm to 9.65 cm, and improved tissue damage scores, without involvement of statin medications.
In mice with a genetic form of ischemic heart disease caused by diet, red wine grape pomace lowered levels of the inflammatory marker IL-1β in the blood from 329.4 to 37.37 pg/mL, reducing systemic inflammation to a degree similar to statin drugs.
In mice with a specific genetic form of ischemic heart disease caused by diet, supplementation with red wine grape pomace resulted in higher levels of the protein ZO-1 in the blood compared to unsupplemented mice, indicating a change in intestinal tight junction integrity.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.