Spinach is connected to eye health because it contains lutein, which is related to vitamin A. Research shows that people who eat green leafy vegetables may have a decreased risk of macular degeneration. Spinach also gives you iron, vitamin K and folate, and it is very low in calories.
Spinach is good for more than your eyes. Your body needs iron in order to transport oxygen from your lungs to all the cells in your body, and vitamin K is necessary for normal blood clotting. Lutein is an antioxidant and may also help prevent or slow down atherosclerosis, the thickening of arteries, which is a major risk for cardiovascular disease.
You can eat raw spinach leaves in place of lettuce in salads and sandwiches, or serve spinach as a side dish or incorporate it into other recipes.
Spinach Recipes From About.com
Source:Tan JS, Wang JJ, Flood V, Rochtchina E, Smith W, Mitchell P. "Dietary antioxidants and the long-term incidence of age-related macular degeneration: the Blue Mountains Eye Study." Ophthalmology. 2008 Feb;115(2):334-41.