Grapes are fruits commonly grown in the Mediterranean, Europe and North America. They are found in a variety of forms such as juice, dried as raisins, fermented as wine and pressed to make grape seed oil. Grape seed oil contains many different properties that are healthy for the body. According to The University of Maryland Medical Center, these properties aid in treating health problems such as cancer, heart disease, skin damage and diabetes. Grape seed oil is most effective when purchased unprocessed and unrefined.
Linoleic acid
Grape seed oil is rich in omega-6s otherwise known as linoleic acid. These are considered essential fats because the body cannot make them and so you must rely on grape seed oil or other food sources. Linoleic acid is a polyunsaturated fat which can help lower cholesterol, maintain healthy skin, and protect the brain and nervous system. Other sources of linoleic acid include soybean, corn and safflower oil.
Vitamin E
Grape seed oil offers a variety of nutrients including vitamin E. Vitamin E acts as an antioxidant and helps lower the risk of high cholesterol, heart disease,certain cancers and stroke. As an antioxidant, it also helps protect and absorb essential fatty acids such as omega-6 fats. For alternative sources of vitamin E, look to sunflower seeds, almonds, wheat germ, spinach and turnip greens.
Antioxidants
Resveratrol, a compound found in grapes and grape seed oil, is a powerful antioxidant which helps to protect cells against damaging free radicals. A high intake of resveratrol may be associated with a reduced risk of cancer and cardiovascular disease. According to scientists at the Illinois College of Pharmacy in Chicago, resveratrol acts as an antimutagen which prevents the formation of tumors. Another grape-related source of the antioxidant resveratrol is red wine.
Source: http://www.livestrong.com/article/275785-benefits-of-grape-seed-oil/