- Grape juice has high levels of polyphenols called flavonoids, naturally-occurring compounds found in plant-based foods. Flavonoids increase levels of good cholesterol (HDL), lower the risk of clogged arteries and potentially lower blood pressure.
- Flavonoids, like other polyphenols, are examples of antioxidants. Antioxidants such as those found in grape juice are substances that can prevent damage to body cells and repair cell damage that has already occurred.
- Resveratrol is a flavonoid found in the skin of red and purple grapes. A study conducted by the U.S. Department of Agriculture indicated that grape juice derived from Concord grapes has more heart-healthy flavonoids than red wine, cranberry juice or orange juice.
- A study published in the journal "Circulation" indicated that drinking Concord grape juice helps with blood clotting and reduces the production of superoxide, a particularly damaging free radical in the body.
- A different study published in "Circulation" indicated that people diagnosed with coronary heart disease who drank 2 servings of purple grape juice per day showed improved blood circulation and reduced levels of bad (LDL) cholesterol.
- Drinking purple grape juice may also help brain function. A recent study conducted at Tufts University on laboratory rats indicated that substances found in grape juice may improve strength, memory and coordination.
