on October 27, 2026
A fruit studied for cardiovascular health
Arterial hypertension represents one of the main modifiable risk factors for cardiovascular diseases. However, blood pressure control does not depend on a single food: physical activity, body weight, diet quality, sodium and alcohol consumption, sleep, stress, and, when indicated, pharmacological therapy all contribute to cardiovascular risk management.
Within this framework, pomegranate (Punica granatum) has attracted increasing scientific attention in recent years.
The fruit contains a wide variety of bioactive substances, including ellagitannins, punicalagins, anthocyanins, and other polyphenols. These compounds have been studied for their ability to interact with biological processes involved in vascular function, oxidative stress, and the inflammatory response.
Interest therefore stems not only from the antioxidant properties traditionally attributed to the fruit, but from the possibility that some of its components may influence endothelial function and the regulation of vascular tone.
The meta-analysis that reignited interest
Clinical evidence on the relationship between pomegranate and blood pressure has not always been consistent.
To clarify the picture, a systematic review and meta-analysis published in 2024 analyzed the randomized controlled trials available up to January of the same year.
From 2,315 initially identified records, 22 randomized controlled trials were selected, conducted on adults who had consumed pomegranate in various forms.
The combined analysis showed:
· an average reduction in systolic blood pressure of 7.87 mmHg;
· an average reduction in diastolic blood pressure of 3.23 mmHg.
The effect on systolic blood pressure was also greater in participants who had values above 130 mmHg at the start of the studies.
The result is interesting because a reduction in blood pressure, even in the range of a few mmHg, can be relevant from a cardiovascular prevention perspective.
But there is one element that should not be overlooked: the heterogeneity among the studies was very high, with I² of 90% for systolic blood pressure and 91.8% for diastolic.
This means that the studies did not produce homogeneous results and that the magnitude of the effect cannot be considered universally predictable.
Pomegranate juice has also been studied
A previous meta-analysis had focused exclusively on pomegranate juice.
The analysis of 14 clinical studies, involving a total of 573 participants, showed an average reduction in systolic blood pressure of approximately 5 mmHg. The effects also appeared to depend on the duration and the amount consumed.
Interestingly, the effect did not appear to increase simply in proportion to the amount of juice.
In the analyzed trials, amounts up to approximately 300 ml per day were associated with a significant reduction in systolic blood pressure, while higher doses did not necessarily show an additional benefit on systolic pressure. The authors also observed that the benefit on blood pressure seemed to decrease after about two months of continuous consumption.
This finding recalls an important principle of nutrition: more does not necessarily mean better.
What can explain the effect on blood pressure?
The possible antihypertensive effect of pomegranate does not seem attributable to a single mechanism.
One of the most interesting hypotheses concerns the endothelium, the tissue that lines the inside of the blood vessels.
The endothelium participates in the regulation of vascular tone through the production of mediators such as nitric oxide (NO). When endothelial function is compromised, the ability of the vessels to dilate may be reduced, and this can contribute to an increase in blood pressure.
Pomegranate polyphenols have been studied precisely for their ability to modulate processes associated with endothelial function and oxidative stress.
However, this does not mean that pomegranate acts as an antihypertensive drug through a single molecular target. It is more plausible to hypothesize an interaction between several processes: polyphenol bioavailability, microbial metabolism, oxidative stress, endothelial function, and the regulation of vascular tone.
Studies on the endothelium
Some clinical studies have sought to understand whether the reduction in blood pressure was accompanied by changes in vascular function.
In a study conducted on 21 people with hypertension, the consumption of 150 ml per day of pomegranate juice for two weeks was associated with a significant reduction in systolic and diastolic blood pressure and a decrease in VCAM-1, an indicator involved in the interaction between the endothelium and inflammatory cells. Endothelial function measured by flow-mediated dilation, however, did not show a statistically significant improvement.
This result is particularly interesting because it demonstrates once again that an improvement in blood pressure does not necessarily imply an improvement in all vascular markers.
In another small study, 13 men with hypertension consumed 150 ml of pomegranate juice and were assessed after 4–6 hours. Acute reductions in systolic and diastolic blood pressure were observed, while the main inflammatory and endothelial function markers did not show statistically significant changes.
These are results that suggest a possible vascular effect, but the small size of the studies makes it impossible to draw definitive conclusions.
A possible role of oxidative stress
The cardiovascular system is particularly sensitive to the balance between the production of reactive oxygen species and the body's antioxidant capacity.
Excessive oxidative stress can interfere with the bioavailability of nitric oxide and promote alterations in endothelial function.
Pomegranate polyphenols are able to interact with these biological pathways.
It is therefore plausible that part of the cardiovascular effect observed in the studies is linked not to a simple “antioxidant” action, but to the modulation of cellular networks involved in vascular homeostasis.
This point is important because the term antioxidant, often used in nutritional communication, is too generic to describe the complexity of the action of polyphenols.
Pomegranate and cardiovascular metabolism
The possible benefit of pomegranate does not necessarily concern only blood pressure.
The fruit and its derivatives have also been studied for their effects on plasma lipids, blood glucose, inflammation, and other cardiometabolic parameters.
A more recent meta-analysis dedicated to pomegranate supplementation reported improvements in several cardiometabolic risk factors, including systolic and diastolic blood pressure, body weight, and HDL cholesterol, but in this case too, the authors emphasize the need for further randomized studies of greater duration and size.
It is therefore more accurate to speak of the potential contribution of pomegranate to the cardiovascular profile rather than attributing to it an isolated therapeutic action.
Not just juice: extracts too
Clinical research has not exclusively used juice.
Standardized pomegranate extracts have also been studied.
In a randomized, double-blind, placebo-controlled trial, 55 adults consumed a pomegranate extract or placebo for eight weeks. At the end of the study, diastolic blood pressure had significantly reduced in the treated group, while the reduction in systolic blood pressure had not reached statistical significance. No significant changes in body weight, waist circumference, or body composition were observed.
This finding shows how important it is to distinguish between fruit, juice, extract, and concentrated preparations.
They are not necessarily equivalent in terms of chemical composition, polyphenol dose, and bioavailability.
An innovative formulation: microencapsulated pomegranate
The most recent research is also exploring different methods of administration.
A small randomized study published in 2026 evaluated fresh pomegranate juice and a form of microencapsulated juice in women with mild hypertension. The researchers observed a moderate postprandial antihypertensive effect of the microencapsulated formulation, used as an addition to pharmacological therapy. The same authors specify that these results do not support the replacement of antihypertensive medications.
This is an interesting step because it demonstrates how nutritional research is beginning to focus not only on the food, but also on the pharmaceutical-nutraceutical form in which its bioactive compounds are administered.
However, as it is a pilot study with very small groups, the result must be considered preliminary.
Pomegranate does not replace antihypertensive therapy
This is probably the most important point from a clinical perspective.
The reduction in blood pressure observed in the meta-analyses does not mean that pomegranate can replace a prescribed antihypertensive medication.
Hypertension is a condition in which cardiovascular risk management must be personalized and monitored over time.
Pomegranate can be considered a potentially beneficial food within a cardioprotective dietary style, but it should not be presented as a standalone therapy.
In particular, those taking medication for blood pressure should not independently change the dosage or frequency based on the introduction of pomegranate juice or extracts.
Whole fruit or juice?
From a nutritional perspective, whole fruit and juice are not equivalent.
Whole fruit provides fiber and determines a different metabolic response compared to juice. Juice, on the other hand, allows for the consumption of a greater amount of bioactive compounds in a more concentrated form, but it can provide a significant amount of sugar and calories without the same amount of fiber.
In clinical studies on blood pressure, juice has been used mainly, but this does not mean that it is necessary to consume it daily in large quantities to obtain a benefit.
The most reasonable principle is to include pomegranate within an overall balanced diet, prioritizing the whole fruit when possible and using unsweetened juice in moderation.
The true strength of pomegranate: the dietary context
The possible effect on blood pressure must be interpreted within a dietary model.
A diet rich in fruit and vegetables, legumes, whole grains, nuts, fish, and extra virgin olive oil provides a combination of fiber, minerals, unsaturated fatty acids, and polyphenols that act through numerous metabolic pathways.
In this context, pomegranate can represent one of the components of a cardiovascular nutritional strategy, not the exclusive center of the strategy.
The available research suggests that its consumption may contribute to the reduction of blood pressure, especially in people with higher initial values. But the great heterogeneity of the studies and their generally limited duration make it impossible to establish a universal effect and define a standard therapeutic dose.
A possible ally, not a therapy
Pomegranate is therefore a particularly interesting food for cardiovascular research.
Its polyphenols can interact with numerous biological processes involved in vascular function, and several clinical studies have detected a reduction in blood pressure after consuming the fruit or its juice.
The largest available meta-analysis showed an average reduction of approximately 7.9 mmHg in systolic blood pressure and 3.2 mmHg in diastolic, with more favorable results in subjects who had an initial systolic blood pressure above 130 mmHg. However, the high heterogeneity among the studies requires caution in interpretation.
The scientifically most correct message is therefore simple:
pomegranate can be an ally in cardiovascular nutrition, but it should not be considered a replacement for antihypertensive therapy.
Its future interest will depend on research's ability to clarify which components are most responsible for the effect, which form of administration is most effective, what dose is truly useful, and which people may benefit the most.
Bibliographic references
1. Bahari H, Omidian K, Goudarzi K, et al. The effects of pomegranate consumption on blood pressure in adults: A systematic review and meta-analysis. Phytother Res. 2024;38(5):2234-2248. doi:10.1002/ptr.8170.
2. Ghaemi F, Emadzadeh M, Atkin SL, et al. Impact of pomegranate juice on blood pressure: A systematic review and meta-analysis. Phytother Res. 2023;37(10):4429-4441. doi:10.1002/ptr.7952.
3. Sahebkar A, Ferri C, Giorgini P, et al. Effects of pomegranate juice on blood pressure: A systematic review and meta-analysis of randomized controlled trials. Pharmacol Res. 2017;115:149-161.
4. Clinical evaluation of blood pressure lowering, endothelial function improving, hypolipidemic and anti-inflammatory effects of pomegranate juice in hypertensive subjects. 2013.
5. Clinical investigation of the acute effects of pomegranate juice on blood pressure and endothelial function in hypertensive individuals. 2014.
6. Asgary S, Sahebkar A, Afshani MR, et al. Effects of pomegranate juice on blood pressure and lipid profile in patients with type 2 diabetes: A single-blind randomized clinical trial. Clin Nutr ESPEN. 2017/2019.
7. Effect of pomegranate extract on blood pressure and anthropometry in adults: a double-blind placebo-controlled randomised clinical trial. Br J Nutr. 2017.
8. Effects of pomegranate juice supplementation on pulse wave velocity and blood pressure in healthy young and middle-aged men and women. Plant Foods Hum Nutr. 2012.
9. Intake of polyphenol-rich pomegranate pure juice influences urinary glucocorticoids, blood pressure and homeostasis model assessment of insulin resistance in human volunteers. Br J Nutr. 2014.
10. Postprandial Antihypertensive Evaluation of Microencapsulated Pomegranate Juice in Women With Mild Hypertension: A Randomized Pilot Study. Int J Hypertens. 2026.
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