Introduction: In ancient China, people called spinach "red-billed green Ying Ge", also known as Persian cuisine and red-rooted cuisine. Compendium of Materia Medica holds that eating spinach can "dredge blood vessels, open the chest and diaphragm, lower the qi, adjust the middle energizer, quench thirst and moisten dryness." The ancient Arabs also called it "the fifth vegetable". Spinach not only contains a lot of? Carotene and iron are also excellent sources of vitamin B6, folic acid, iron and potassium. Spinach contains quite a lot of protein, and each 0.5 kg of spinach is equivalent to the protein content of two eggs. Spinach is also rich in enzymes. Efficacy: If you look pale, please eat spinach often. It can improve iron deficiency anemia and make people look rosy and radiant, so it is known as a beauty product. Spinach leaves contain an insulin-like substance, which is very similar to insulin and can keep blood sugar stable. The rich vitamin content in spinach can prevent the occurrence of vitamin deficiency such as angular stomatitis and night blindness. Spinach contains a lot of antioxidants, which can resist aging and promote cell proliferation. It can not only activate brain function, but also enhance youthful vitality, which helps to prevent brain aging and Alzheimer's disease. A study by Harvard University also found that eating spinach 2-4 times a week for middle-aged and elderly people can reduce the risk of retinal degeneration and thus protect their eyesight. Spinach is good at cleaning up the heat toxin in human stomach. Chinese medicine believes that spinach is sweet and cool, which can nourish blood and stop bleeding, astringe yin and moisten dryness. So it can prevent constipation and make people radiant. Suitable for people: spinach is soft, smooth and easy to digest after being cooked, especially suitable for the old, the young and the sick. Computer workers and beauty lovers should often eat spinach. Diabetic patients (especially type II diabetic patients) often eat spinach, which is beneficial to keep blood sugar stable. Dosage: 80 ~ 100g per meal. Tips: Many people love spinach, but it must be noted that spinach can't be cooked directly, because it contains more oxalic acid, which hinders the body's absorption of calcium. So when you eat spinach, you should first blanch it with boiling water, take it out and fry it. We should eat as much alkaline food as possible, such as kelp, vegetables and fruits. To promote the dissolution and discharge of calcium oxalate and prevent stones. Infants and children and people with calcium deficiency, rickets, tuberculosis, kidney calculi's disease and diarrhea should not eat raw spinach. Although spinach contains iron