Spinach is a common vegetable, due to its rich nutrients and therefore loved by everyone.

Spinach has a high level of potassium, 100g of spinach has 311mg of potassium, potassium is one of the essential elements of the human body, potassium ions with other ions to regulate the ionic balance in the body, for the heart, blood vessels have a regulatory role in the regular rhythm, and also has a regulatory role in the contraction of muscles. Potassium ions are also the body can be anti-aging ions, because especially for the cardiovascular regulation has an important role, there are 85.2mg sodium elements, in addition, spinach is rich in calcium, magnesium, phosphorus, iron and other mineral components.

Spinach is rich in iron, but because spinach belongs to tannins, oxalic acid, phytic acid more vegetables, for iron absorption has a greater obstacle, belongs to the non-heme iron, the absorption rate of only 5 to 15%, therefore, if you want to supplement iron and blood friends best not to use spinach to regulate, and supplement iron and blood the best is the best of the animal food, such as animal liver, animal blood, animal red lean meat. The iron in them belongs to heme iron, high absorption rate, up to 15~35%. In addition, spinach is best not eaten in excess, due to oxalic acid, high dietary fiber, may cause indigestion, may also inhibit the absorption of other nutrients. Excessive intake of spinach may also increase the risk of kidney stones, as calcium oxalate is not allowed and is also rarely excreted from the body, and may form calcium oxalate stones over time. It is best to cook spinach over boiling water to remove more oxalic acid, which will be more favorable for consumption.