Iron - works to produce hemoglobin in the red blood cells (RBCs) that carry oxygen to the different parts of the body. If iron is less than the required quantity, it may lead to iron deficiency, which causes Anemia. This is caused when there is a less number of red blood cells in the body due to too little iron. Soybean is an excellent source of iron, which can reduce the risk of heart disease, osteoporosis and cancer. Soybean is also rich in selenium, magnesium and calcium. It is also a complete protein food with eight essential amino acids. Spinach is a green leafy vegetable that has the highest content of iron. Spinach also contains other minerals like calcium and magnesium. You can consume spinach as a curry or add it in soups or salads. Nuts like almonds, cashew nuts and peanuts are also rich in iron. Cashew nuts contain the highest amount of iron; however, do consume them raw without the addition of salt. Eat these healthy nuts as a snack!