Each cup of raw spinach provides you with 145 micrograms of vitamin K, or 181 percent of the daily value; 2,813 international units of vitamin A, or 56 percent of the daily value; 6.9 milligrams of vitamin E, or 35 percent of the DV; 58 micrograms of folate, or 15 percent of the DV; and 8.4 milligrams of vitamin C, or 14 percent of the DV. It also provides smaller amounts of iron, calcium, potassium and phosphorus. Vitamin K is essential for blood clotting, vitamin A is needed for good vision and vitamin E is important for immune function. The folate in raw spinach helps prevent neural tube birth defects, and the vitamin C is necessary for repairing tissue and healing wounds.