Like nearly all types of nuts and seeds, sunflower seeds provide a healthy source of essential fatty acids; their specific fatty acids are in the form of linoleic acid. It is a food rich in Vitamin E, copper, and B vitamins like thiamine, phosphorus, selenium, and more. Not only are they a great snack, sunflower seeds offer several extraordinary health benefits. They promote cardiovascular health, promote healthy cholesterol levels, support a good mood, and serve as an antioxidant.