Dried blueberries are rich in vitamin K, providing about 23.8 micrograms of the vitamin per one-quarter cup. This amount equates to 20 to 26 percent of the recommended daily value for vitamin K. Vitamin K helps your blood clot properly and plays a crucial role in your bone health. Furthermore, vitamin K helps your body use calcium to build bones. Evidence suggests that vitamin K helps cut the risk of bone fractures, especially in postmenopausal women who are at risk for osteoporosis.