The researchers gave 2 cups of purple grape juice to 14 people with coronary artery disease for 2 weeks. Anything we can do to delay that oxidation should be beneficial. One reason organizations like the American Heart Association urge people to eat diets rich in fruits and vegetables is for the antioxidant benefits these foods provide. Purple grape juice may promote anticlotting effects In other preliminary research involving 10 healthy people, drinking purple grape juice significantly reduced the blood's tendency to form clots. The purple grape juice platelet inhibitory effect in the study was stronger than a published standard for aspirin.
Many cardiologists recommend aspirin to their patients to reduce platelet aggregation.
Purple grape juice may stimulate nitric oxide production Purple grape juice flavonoids may also increase platelet production of nitric oxide. Researchers at Georgetown University Medical Center in Washington, D.C., found that blood platelets bathed in a diluted solution of purple grape juice release three times more nitric oxide than those in a control group.