When it comes to blood donation, you have to mention one person-Wang Yanping.

1 1 year, he donated blood for free 106 times, 73,600 ml, equivalent to the total blood volume of 15 adults, and was called "the king of blood donation". However, fate did not give preferential treatment to such a good man. Bad news came: Wang Yanping died at the age of 48. As soon as the news came out, it went to Weibo Hot Search, and netizens left messages to mourn and express their regret. At the same time, many people questioned his blood donation behavior, thinking that his death may be related to frequent blood donation.

Some people even bluntly say that blood donation is harmful to the health, and even doctors are unwilling to give it.

A casual search on the Internet can also see many similar "hazards of blood donation": blood donation will damage vitality and lead to anemia, blood donation will lead to blood vessel rupture and obesity, blood donation is easy to be infected with AIDS and hepatitis B, and frequent blood donation is easy to get leukemia. ......

However, is this really the case?

Blood donation is harmful to health, so doctors never donate blood?

Previously, an article entitled "Why don't doctors donate blood? After reading it, I was shocked! The article ""went viral on the Internet. The article says that blood donation is harmful and useless, and doctors and nurses never donate blood.

This has caused many people to be afraid of "donating blood" and have the heart but no courage. However, the opposite is true. Medical staff not only donate blood, but also are the main force of blood donation. According to official national data, college students, civil servants and medical staff have the highest blood donation rate and are the main force of blood donation.

Many medical staff have also come forward to refute the rumor that "doctors never donate blood". In fact, the saying that blood donation hurts the body is actually untenable. Let's take a look at it one by one ~

Will blood donation hurt your vitality and lead to anemia?

According to China's regulations, the amount of blood donation at a time is 200~400 ml, and the interval of blood donation is 6 months. The total blood volume of a healthy adult is 4000~5000 ml, accounting for about 8% of the body weight. Donate 200~400 ml of blood at a time, accounting for only 5%~ 10% of the total. Visible amount is not large.

Moreover, not all the blood in the human body circulates in the cardiovascular system to maintain normal physiological functions. About 20% of the blood is stored in organs such as the liver and spleen, which is professionally called "reserved blood volume". After blood donation, the missing blood volume will be replenished immediately through the reserve blood volume, which will not affect the normal physiological function.

In addition, the body itself has a strong hematopoietic function, and donated blood will be regenerated immediately. Therefore, a healthy person who donates blood according to the regulations will not hurt his vitality or be anaemic.

But if blood donation is too frequent and too large, even the blood reserve can't keep up, that's another matter. So, is Wang Yanping's death related to excessive blood donation?

During 1 1 year, blood donation 106 times, 73600 ml, equivalent to 694ml each time, about 10 times a year. According to the regulations, the amount of whole blood donation at a time is 200~400 ml, and the interval of blood donation is 6 months. Therefore, many people think that Wang Yanping belongs to excessive blood transfusion.

Actually, it is not. There are two kinds of blood donation: whole blood donation and blood component blood donation. Giving blood component usually means giving only platelets. According to the requirements of blood donors' health examination, the interval between platelet collection and blood donation should be no less than 2 weeks and no more than 24 times per year. You can donate 1~2 therapeutic doses of platelets at a time, and each therapeutic dose is calculated as 800ml of whole blood.

In this way, 1 1 annual blood donation 106 times, 73600 ml is completely reasonable. In fact, according to China's Blood Donation Law, even if you want to donate blood in excess, it is not allowed. Moreover, blood donation requires physical fitness, and you can donate if you want to donate.

In fact, Wang Yanping's death was due to other reasons. Wang Yanping accidentally fell on the cervical vertebra, causing high paraplegia. He struggled with the disease for several years until he died of complications.

Can blood donation lead to blood vessel rupture and obesity?

It is said that blood donation will lead to blood vessel rupture, which can not be repaired for life. This statement is a bit ridiculous. If that's the case, who dares to do a blood test? Who dares to give an injection or infusion?

In fact, this kind of small blood vessel rupture can be automatically repaired by normal people, so don't worry at all. It is also unscientific to say that donating blood will make you fat. After blood donation, the body makes blood, not fat, so blood donation will not directly lead to obesity. Getting fat is due to overnutrition caused by indulgence in eating and drinking after blood donation.

Therefore, reminding friends who donate blood to pay attention to matching when supplementing nutrition can appropriately increase the proportion of protein, and foods with high calorie and fat should also be properly controlled.

Often donate blood, easy to get leukemia?

Some people say that there are fewer platelets after blood donation, so it will lead to leukemia. This is really the result. Leukemia patients do have thrombocytopenia, but this is the result of the disease, not the cause of the disease. At present, there is no evidence that the proportion of leukemia patients who donated blood in the past is higher than that of ordinary people.

For healthy adults, thrombocytopenia after blood donation is not a big problem. Because in the human body, the life span of platelets is only about 10 days, and the human body has to constantly "make" platelets. After blood donation by healthy adults, platelets can return to the level before blood donation within 2~3 days.

Is it easy to infect AIDS and hepatitis B by donating blood?

As we said before, there are two kinds of blood donation: whole blood donation and apheresis platelet donation. Some people worry that donating platelets is easy to infect hepatitis B and AIDS. Because of the donation of platelets, the blood must be drawn out first, the platelets are separated by a blood separator, and then the remaining blood is returned to the blood donor.

Many people are worried about insecurity when they come in and out. In fact, this kind of worry is completely unnecessary. It is safe to donate whole blood or platelets. Needles and blood bags for blood collection are brand-new consumables, which will not be infected with each other because of blood donation after high-pressure disinfection.

In the process of platelet donation, the blood is always circulated and separated in a sealed tube sleeve that has been strictly sterilized, and the blood is not in direct contact with the machine, so it is impossible to be infected with germs. To sum up, there is no harm in donating blood normally according to the regulations. On the contrary, it will be beneficial: it can reduce blood viscosity and prevent cardiovascular and cerebrovascular diseases. After normal blood donation, the blood viscosity will decrease, thus reducing the hidden danger of arteriosclerosis.

Blood donation is free, why spend money to buy blood?

In fact, whether it is allogeneic blood or autologous blood, the blood itself is free. The expenses paid for blood donation are actually the expenses for blood preparation, including testing, preparation and storage. Before donating blood, blood station staff should make a preliminary investigation, including the detection of hemoglobin, transaminase and hepatitis B virus.

After blood collection, the blood station will further detect hepatitis B, hepatitis C, AIDS and syphilis. And at least twice. After the blood test is qualified, it is necessary to separate out different components, store them in special containers at low temperature, and transport them to various hospitals through cold chain transportation. In fact, charging for blood is far from enough to maintain the operating cost of blood stations, and it often depends on government financial allocation.