Spinach contains low fat and cholesterol, but a good amount of fiber. They lower the risk of cancer and the occurrence of asthma. Spinach is rich in vitamins A, C and K, magnesium, iron and manganese. Eating this leafy green veggie may benefit eye health, reduce oxidative stress and reduce blood pressure levels among other health functions. It improves the blood glucose levels in people suffering from diabetes and also improves skin and bone health.