Some research suggests that grape juice may have similar heart benefits as red wine, including helping to maintain a healthy blood pressure and preventing the formation of blood clots. However, the health benefits provided depend on the type of grape and where it is grown.
Other benefits that grape juice may give include preventing damage to blood vessels in the heart and lowering LDL or "bad" cholesterol. However, research suggests that many grape products, not just grape juice, may be good for the heart and overall health. Grapes contain many antioxidants that are helpful to the body, but they are primarily found in the skin, stem and leaves. Eating whole grapes not only provides heart benefits and antioxidants, but is also a better source of fiber than grape juice alone.