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Spinach is loaded with nutrients in a low calorie package. It is very rich in vitamin K, vitamin A, protein and manganese.
Spinach is a low-calorie vegetable, providing only about 27 calories in 100g (3.5oz), and most of these calories come from protein. Same amount of spinach contains 460% of daily recommended intake of vitamin K, which plays a major role in proper blood clotting. Vitamin A, contained in spinach in the form of beta carotene, helps lower the risk of heart disease. Beta carotene also helps lower the risk of developing asthma.