A 1-cup portion of raw blackberries packs about 25% of the Daily Value for vitamin K, which helps the blood to clot and is essential for your bones. Vitamin K is required for bone formation, and several studies have shown that a shortfall is linked to increased risk of fracture and osteoporosis. The manganese in blackberries (you’ll get 150% of the DV in 1 cup) also supports bone health, as well as collagen production for healthy skin and joints.

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