Everyone says it's good to donate blood. I gave it once, but my family taught me a lesson. What effect does blood donation have on human body?

Do you know the harm of blood donation? (Reprinted) Wednesday, September 05, 2007 19:57 Recently, at every critical time, the blood departments of various provinces and cities always call on the general public to actively donate blood through the news media to solve the urgent need, and our most lovely college students are the main force of the blood donation army. Let's not talk about whether students donate blood for free, and whether blood centers and hospitals have profits. Let's talk about the harm of blood donation to the body.

As an ordinary medical worker, I feel that I have an obligation to make a reasonable explanation for some misunderstandings of my friends.

First of all, what is blood?

Blood contains three kinds of blood cells: red blood cells, white blood cells and platelets.

Every component in blood has its special function. Plasma can bring water, salt, nutrients, hormones and drugs into our tissues, and bring metabolic wastes to the lungs and kidneys, and excrete them through breathing and urine. Among them, white blood cells can help your body resist infection, and the function of platelets is mainly to stop bleeding. When you are injured, they will stick together and block the hole in the blood vessel to prevent further blood loss.

Red blood cells are the most abundant cells in the blood. They are full of red hemoglobin, so the blood looks red. As we all know, survival is inseparable from oxygen. Oxygen inhaled into the lungs combines with hemoglobin and is transported to various tissues of the whole body to complete cell metabolism. The life span of red blood cells is only 120 days, and they are destroyed in spleen. All blood cells are differentiated from hematopoietic stem cells in bone marrow.

This can clearly see the importance of blood to the body, so why is blood donation harmful to the body? Because donating blood will weaken or even lose the above blood function. Simply put: the reduction of red blood cells will make all parts and organs of the body unable to get enough oxygen. Every cell's life loves cats. They love life. Dizziness after blood donation is because the brain can't get enough oxygen supply, which is the same as carbon monoxide poisoning.

The decrease of white blood cells will reduce the body's ability to resist viruses and make it easy to get sick. This is the reason for weakness after blood donation, and the reduction of immune ability will give an opportunity to viruses that were originally insignificant, such as colds.

By the way, another name for the famous AIDS is "Acquired Immunodeficiency Syndrome". The lack of platelets will make the wound difficult to heal and bleed. Of course, no one will be unfortunately injured after donating blood.

By the way, one of the most serious consequences of leukemia is thrombocytopenia ("blood suspicion" should only be seen by the elderly? )

Some people say: you are wrong. Everyone says that after donating blood, the body will produce enough blood to supplement it. Just now I said, "All blood cells are differentiated from hematopoietic stem cells in bone marrow." According to conscience, hematopoietic stem cells have a life span, that is to say, the hematopoietic function of hematopoietic stem cells is not infinite.

There is a simple example: the bone marrow hematopoietic function of most elderly people is only 50% of that of young people. Because of the decline of hematopoietic function, anemia is prone to occur and it is not easy to recover. So I think hematopoietic stem cells are consumables and irreversible!

Others said: The book says that the blood volume will be replenished 2 weeks after blood donation. Yes, you are right, but please note: what is the supplement? As far as I know, the body should replenish plasma within 2 weeks. Plasma and blood are two concepts.

Plasma consists of water (9 1%), protein (7%), lipids (1%), sugars (0. 1%), inorganic salts (0.9%) and metabolites. . . See, it's actually water!

Here is a simple example: you will feel thirsty after donating blood, because you need to replenish plasma, and the blood station will provide sugar water or milk for free. Why, do you understand?

Others said: I know everything you said, but I will give it for the happiness of the majority of patients. All right! You're great. You're really great. I admire you. However, when you don't donate blood for free, don't patients have no blood to lose? Of course not. Ben may have worked in the hospital longer than you. I have to tell you:

It is precisely because of the enthusiasm of unpaid blood donors that patients bear higher blood use costs. Because of the huge profits of blood, the government monopolized the blood collection channels. When there was no blood station, the price per 200mm of blood was 70 yuan RMB, and now the price is about 200 yuan RMB. Moreover, in the past, it was necessary to pay corresponding economic compensation to blood donors. Now they donate blood for free and don't need to pay any financial compensation to the blood donors.

Now the hospital goes to the blood station to buy blood, which is really real money, and a penny is not enough. These costs cannot be passed on to patients, and will eventually be passed on to patients. Actually, there's nothing we can do. And because of a large number of unpaid blood donors, farmers and laid-off workers who used to live by selling blood have now broken their financial path and embarked on the road of crime!

Some people say: can't blood donors use blood for free? Yes, first give the blood money to the hospital, then go to the hospital office to get a certificate, then ask the doctor to sign it, take your ID card, medical record, operation notice and blood donation card, then stamp it at the health bureau, and then apply for a refund at the blood station. There are all handlers, and some places stipulate that patients must deal with them personally! I did meet many patients and finally gave up the blood refund fee from the blood station, believing that I was unlucky.

Others said: blood donation can at least be checked for free. My supervisor told you that blood stations only do the most routine blood type and hepatitis B tests. There is even a report that I didn't verify. Let's have a look.

Donate blood without physical examination?

Why didn't you have a physical examination before donating blood? A few days ago, the child participated in a voluntary blood donation in the blood donation hut, and the staff of the blood bank began a busy blood drawing work without conducting a substantive physical examination of the voluntary blood donor. In the face of many people's questions, the staff of the blood bank explained that since the implementation of the Blood Donation Law, there has been no physical examination, which is the case all over the country.

Finally, what is the attitude of the blood bank to the first blood for free? It's hard to say. Anyway, Chengdu dumped hundreds of thousands of CC, and some blood was sold to pharmaceutical factories as raw materials. Basically, when there is a problem, it is dumped in batches. This kind of thing is not exposed in every city. People in blood stations are basically retired soldiers or social idlers. There are few medical college graduates, and the benefits are surprisingly good. There are tens of thousands of blood collection vehicles at the end of the year, believe it or not.

Finally, have you really seen doctors who often donate blood for free? Even if I have seen it, how many?