Pomegranate compounds and their effects in the body
What it found
Pomegranate contains different groups of plant compounds in its peel, juice and seeds, and these may support antioxidant, anti-inflammatory and other body functions.
Much of the evidence comes from lab and animal studies, with mixed results in people.
What they found
Studies in people
Mixed results in people
A trial in 60 people with type 2 diabetes found six weeks of daily pomegranate juice lowered oxidized LDL and raised total antioxidant capacity. But a meta-analysis of 11 trials with 484 people found no clear improvement in overall antioxidant status.
Gut bacteria in people
In a three-week study, eating peeled pomegranate arils shifted gut bacteria toward more carbohydrate-fermenting types. A four-week trial of a punicalagin-rich extract increased short-chain fatty acid-producing bacteria and urolithin production.
Animal and lab studies
Antioxidant effects in animals
In diabetic rats, pomegranate seed juice restored antioxidant enzymes and lowered oxidative stress markers. In other rat studies, pomegranate preparations reduced markers of oxidative damage in the brain, spleen and testes.
Antibacterial effects in lab tests
Pomegranate peel extracts and punicalagin inhibited many bacteria, including MRSA, in lab tests. Gram-positive bacteria were generally more susceptible than Gram-negative ones.
Studies in people and animals
Gut bacteria change the compounds
Gut bacteria convert ellagitannins and ellagic acid into urolithins, which may account for much of the body-wide activity. Differences in each person's gut bacteria may explain why people respond differently.
Other findings
Different parts, different compounds
The peel is richest in ellagitannins, especially punicalagin and punicalin. The arils and juice are higher in anthocyanins and flavonols, and the seed oil is high in punicic acid.
What the authors conclude
“The health effects of pomegranate should be interpreted within a nutrition-focused, matrix-dependent framework integrating composition, processing, bioavailability, and microbiota-derived metabolism.”
Also in their conclusions
- They say the health effects of pomegranate should be interpreted within a nutrition-focused, matrix-dependent framework that integrates composition, processing, bioavailability, and microbiota-derived metabolism.
- They advise that pomegranate-based interventions are not directly comparable because different studies use different formulations, doses, and study populations.
- They call for standardization strategies based on chemically defined marker compounds, such as punicalagin, alongside transparent reporting of extraction protocols.
How it was done
The authors wanted to bring together what is known about pomegranate's plant compounds and how the fruit's different parts, processing and gut bacteria affect its actions in the body. They note that earlier reviews often treated the chemistry and the health effects separately.
They gathered and reviewed peer-reviewed studies published between 2000 and January 2026 on the chemical makeup of pomegranate and its effects. They looked at how the fruit is processed, how much of its compounds reach the body, how gut bacteria change them, and how they work.
What it can’t tell you
- Many of the antioxidant, anti-inflammatory and anticancer findings come from lab and animal studies, so they cannot show what happens in people.
- The human studies used many different pomegranate products, doses and durations, so their results cannot be combined into one clear answer.
- This is a review of other studies, so it cannot prove that pomegranate causes any health effect.
Who paid
- Conflicts
- The authors declare no conflicts of interest.
- Authors work at
- University of Rzeszow, Poland; University of Rzeszów, Poland
The paper
- Title
- Phytochemical Diversity of Punica granatum L. and Its Multi-Target Biological Functions
- Type
- ReviewThe authors read earlier studies and describe what they found. It isn’t a new study.
- Evidence
- Studies in people · animals · lab
- Summarised from
- Full text
- Licence
- CC BY. Words in quotation marks are the authors’; the rest is our summary.
- Cite
- Kobylińska Z, Bochno A, Och E, et al (2026). Phytochemical Diversity of Punica granatum L. and Its Multi-Target Biological Functions. Nutrients. doi:10.3390/nu18081306Free full textPubMed 42075117DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error