Spinach is rich in zeaxanthin and carotenoids lutein which render youthfulness to your eyes. The high content of iron in spinach makes your eyes brighter. One cup of raw spinach yields 27 calories of energy. It is power packed with magnesium, potassium, vitamin A and folate. It is known to be enriched with alpha-lipoic acid which prevents stress induced changes to the body. A diet full of spinach helps in preventing cancer, asthma, lowers high blood pressure and amplifies bone strength. It also promotes healthy skin and hair.