The various benefits of spinach for health are due to the presence of minerals, vitamins, pigments and phytonutrients, including potassium, manganese, zinc, magnesium, iron and calcium that it contains. One of the biggest reasons why spinach is so important and valued around the world is that it is very durable. You can even survive during the winter and be so healthy in the spring. In addition, you can eat raw as part of many salads as a vegetable accompanying a delicious dish, or, you can cook and be included in a series of recipes for soups, stews and casseroles.