Is spinach a good blood supplement?

　　Is spinach a good blood supplement?

　　suffer from anemia Most of the patients with the disease are caused by iron deficiency. At this time, people, even medical staff, often kindly suggest to patients: "Spinach contains a lot of iron, you should eat more spinach." ”In fact, this is a wrong view.

　　First of all, spinach is not very high in iron, with only 2.5 milligrams of iron per 100 grams of vegetable. The foods with the highest iron content are fungi and algae. The iron content of black fungus and dried mushrooms per 100 grams is as high as 185 mg and 32 mg respectively. Pig, beef, and sheep livers also have higher iron content, with 6.6 to 25 mg of iron per 100 grams. These are higher in iron than spinach.

　　In addition, the more important point is that spinach contains oxalic acid, which can easily combine with iron, calcium and other metals to form oxalates that the human body cannot absorb. Scientists have shown through research that only 1% of the iron in spinach can be dissolved and absorbed in the human intestine, and the remaining 99% of the iron is combined with oxalic acid and other substances to form a water-insoluble complex, losing its nutritional value. If spinach is eaten with other foods high in iron, the folic acid in spinach will combine with the iron in other foods, affecting the body's absorption of the iron in these foods.