1, composed of hemoglobin, participates in the transport and storage of oxygen.

Iron is a component of hemoglobin and participates in the transport and storage of oxygen. Anemia caused by insufficient iron storage in the body can not meet the needs of normal erythropoiesis is called iron deficiency anemia, which usually occurs when iron deficiency lasts for 3 ~ 5 months.

2. Directly participate in human energy metabolism.

In the oxidative respiratory chain of human intracellular respiration, many enzymes are heme-containing iron enzymes. The extraordinary ability of American mountaineers is related to their daily intake of a lot of iron.

3. It has influence on human immune system.

Whether the iron in human body is deficient or excessive, it will pose a threat to human health. Only iron with normal content can guarantee human health.

Second, the disadvantages of excessive iron supplementation

Although iron (iron food) is an essential trace element (trace element food) for human body, iron itself is not toxic, but excessive intake or accidental intake of iron preparations may also lead to iron poisoning. Acute iron poisoning mostly occurs in children.

When children take too much syrup coated with colored sugar-coated tablets made of solid iron or liquid iron, acute poisoning symptoms may occur about 1 hour, which are manifested as epigastric discomfort, abdominal pain, nausea and vomiting, diarrhea and black stool, even purple face, lethargy or irritability, acute intestinal necrosis or perforation, and even shock death.

It can be seen that parents need to be reminded that when adding iron and iron preparations to children (children's food), the dosage must be strictly controlled according to the doctor's advice, and it must not be taken indiscriminately to prevent poisoning.

Extended data

Iron supplement method

1, eat more foods rich in iron.

There are two forms of iron in food: non-heme iron and heme iron. Non-heme iron mainly exists in plant foods. Due to the interference of other food ingredients, the absorption rate of iron in rice flour is extremely low, and the absorption rate of iron in rice flour is only 1% ~ 3%. Heme mainly exists in animal food, and it is not interfered by other food components, so its absorption rate is high. For example, the absorption rate of iron in the liver reaches 10% ~ 20%, which can make everyone supplement iron and blood more fully.

2. Eat more foods that promote iron absorption.

Vitamin c can promote the absorption of iron. Vitamin C is a strong reducing agent, which can convert iron in food into absorbable bivalent iron. Fruits and vegetables such as kiwifruit, citrus, oranges and tomatoes are rich in vitamin C. Drinking tea before and after meals will inhibit the absorption of iron.

References:

Baidu encyclopedia-iron