Spinach is a leafy green vegetable rich in vitamin K, vitamin A, manganese, folate, magnesium, iron, copper, vitamin B6, vitamin B2, vitamin E, calcium, vitamin C, and potassium. In addition, spinach is antioxidant packed and contains a wide variety of other health-supportive nutrients that help strengthen bones and prevent cancers.
Common salt is a mineral composed primarily of sodium chloride. Salt is essential for animal life, and saltiness is one of the basic human tastes. In general, Americans should limit daily sodium consumption to 2,300 milligrams, but this is an upper safe limit, not a recommended daily allowance.