Spinach is a leafy green vegetable. Scientifically known as as Spinacia oleracea, spinach belongs to the amaranth family and is related to beets and quinoa. It is loaded with nutrients and antioxidants, and considered to be very healthy. Iron plays a central role in the function of red blood cells which help in transporting oxygen around the body, in energy production and DNA synthesis. Spinach is also an excellent source of vitamin K, vitamin A, vitamin C and folate as well as being a good source of manganese, magnesium, iron and vitamin B2.