"And the sunflower seed! No food is complete in itself, but the sunflower seed comes very close. Refer to Lesson 24 for details about the bonanza of nutritional elements sunflower seeds provide, including calcium and quality protein." http://www.rawfoodexplained.com/why-we-should-not-eat-animal-products/reject-animal-products-for-optimal-health.html
"No food is complete in itself, but sunflower seeds come very close. These little kernels contain practically the whole spectrum of important nutritive elements, including quality protein. They also contain about every known vitamin except Vitamin C—and even develop this one when sprouted.
"Moreover, sunflower seeds contain highly digestible polyunsaturated fatty acids. They contain Vitamin E, which prevents the rancidity of the oils contained in the seeds, and this is one of the few sun-following plants which contain Vitamin D. Sunflower seeds contain generous amounts of Vitamin A, B-complex factors, Vitamin K, and a bonanza of minerals and trace elements, including potassium, iron, calcium, phosphorus, magnesium and zinc.
"The American Indians used sunflower seeds for food long before white men arrived. In Middle Eastern countries, they're included as a regular course at meals, much as we serve salads. In Russia, sunflower seeds are the national snack, as regular as popcorn and peanuts here. Russian czars are said to have fed their soldiers successfully on two pounds of the seeds daily in their rations.