1 can promote and improve mental health.

A large number of studies show that healthy emotions can communicate with the brain and other tissues and organs through the nervous system, body fluids and endocrine system, so that they are in a good state.

2. Male blood donation may reduce the incidence of cancer.

3. Regular blood donation can improve hematopoietic function.

Bone marrow has become the main hematopoietic organ since the birth of the fetus. With the increase of age, hematopoietic function and hematopoietic rate gradually decreased. Regular blood donation according to the prescribed time limit can keep the bone marrow vigorous.

4, reduce the iron content

Iron is a mineral that human body needs to produce red blood cells. However, too much iron is harmful to people's health. It can be deposited in different organs of the body, such as the liver and heart, and affect the functions of these organs.

Disadvantages of blood donation:

1, insufficient oxygen supply to the brain

After blood donation, the blood volume in the body decreases, resulting in insufficient oxygen supply to the brain. At this time, an acidic component will be produced in the body, which will increase the oxygen content in the blood, and this acidic component has a huge adverse effect on the brain cells of the human body, so people who donate blood will feel dizzy.

2. Blood donation is addictive.

Regular blood donation will strengthen the hematopoietic function in the body and lead to the feeling of vasodilation. Only regular blood drawing can alleviate this discomfort.

3, easy to cause blood infection

If you donate blood to a second person with a newly used needle, it is easy to cause blood infection, so it is very important to choose a regular blood donation institution in a health place when donating blood.

Matters needing attention after expanding data donation:

1, have more rest

Some people who are slightly weak or donate blood for the first time are prone to dizziness, nausea and other adverse symptoms, which are closely related to the sudden change of blood pressure. Therefore, it is best not to engage in strenuous physical labor after blood donation, and pay more attention to rest and rest. Under normal circumstances, the physical condition can be perfectly repaired about two days after blood donation.

2, diet and aftercare

For those who have donated blood, diet therapy and blood supplement should be strengthened. Eat more foods rich in iron, including animal liver, meat, fish and other foods. And in the diet after blood donation, try to avoid eating cold, spicy and other irritating foods.

Baidu encyclopedia-blood donation