While technically a berry, pomegranate "fruit" may be nature's answer to turning the tide against the #1 cause of death in the industrialized world: heart disease. Let's start with what it tells us simply through experiencing it...
Pomegranate has a remarkable astringency, giving your mouth and gums that dry, puckering mouth feel. This cleansing sensation is technically caused, as with all astringents, by shrinking and disinfecting your mucous membranes.
Anyone who drinks pomegranate juice, or is lucky enough to eat one fresh, can understand why it is so effective at cleansing the circulatory system. Nature certainly planted enough poetic visual clues there for us: its juice looks like blood, and it does resemble a multi-chambered heart, at least when you consider its appearance in comparison to most other fruits.
But sometimes the obvious (in appearance and effect) is not compelling enough – certainly not for the hyper-rational, "evidence-based" folks in positions of medical and regulatory power today – so we have science to lend additional support and credibility, and perhaps even keep some of us from being fined or going to jail for stating the obvious, e.g. "This juice may be beneficial to your health."
Indeed, your mouth and your arteries are lined with the same cell type: epithelial cells. Together, they make up the epithelium, one of four basic tissue types within animals, along with connective tissue, muscle tissue and nervous tissue, and which comprises the interior walls of the entire circulatory system. So, when you feel that amazing cleansing effect in your mouth, this is in fact akin to what your circulatory system – and the epithelium/endothelium lining the inside of your veins and arteries – "feels" as well. How do we know this for sure?
Pomegranate actually has been studied to possess therapeutic properties in over 80 diseases or disease symptoms. You can view the entire spectrum of studies on our ("our" meaning yours too, as we are open access) Pomegranate Research Page.
Here are some additional highlights for cardiovascular health
- High Blood Pressure (Hypertension): One of the identified mechanisms behind pomegranate's blood-pressuring lowering properties is its ability to inhibit Angiotensin-Converting Enzyme, at least in the diabetic rat model.  But obviously, reversing the plaque build-up in the arteries is one way to disburden the heart, as well. Another is its ability to increase nitric oxide production in the artery (eNOS), which results in improving its ability to dilate – effectively, reversing endothelial dysfunction.
- Fighting Infection: While it is commonly overlooked, cardiovascular disease, and more particularly atherosclerosis, is connected to infection. Dentists know this, which is why they often prescribe antibiotics following dental work which releases bacteria into systemic circulation. Plaque in the arteries can also harbor viral pathogens. Pomegranate happens to have potent antiviral and antibacterial properties relevant to cardiovascular disease initiation and progression. It has been studied to combat the following infectious organisms:
- Reduces Oxidative Stress: Pomegranate has potent antioxidant properties, which reduces the likelihood that LDL will oxidize, becoming the atherogenic/cardiotoxic form known as ox-LDL, which can injure the lining of the arteries and deposit there as plaque. These antioxidant properties have also been identified to have potential anti-platelet implications, potentially reducing the risk for an obstructive clot.