On a hot summer day, many people experience fatigue, tiredness, loss of appetite, etc. Some people who are willing to donate blood for free are “deterred”, worrying that blood donation will hurt their bodies. In fact, many people have misunderstandings about blood donation, let’s take a look together.
Myth 1: Blood donation can lead to infections such as AIDS and hepatitis
The safety of blood donation mainly depends on three points to ensure: First, when blood donors collect blood, they use a disposable sterilized syringe. After strict sterilization, they will be destroyed after use. Moreover, the manufacturers that produce consumables for blood collection are strictly approved by relevant national health departments;
Second, use one person and one needle when donating blood instead of multiple people to avoid cross infection;
Third, blood donation is an exporting process, drawing blood out of the body, so it will not infect infectious diseases.
Misunderstanding 2: Anemia is prone to occur after blood donation
The human body has a complete blood system, and the blood is self-sufficient. Healthy adults donate about 200~400ml of blood each time, only accounting for about 5~10% of the whole body’s blood volume, and will not cause any harm to the human body. Moreover, the blood volume can be replenished within 2 hours after blood donation, and the red blood cells, hemoglobin, serum iron, etc. can be restored to the level before blood donation within 3 months. Therefore, blood donation will not only cause anemia, but because of the enhanced hematopoietic function, it is beneficial to health.
Misunderstanding 3: Blood donation will lead to decreased immunity
A large part of the reason that blood donation will reduce the immunity of blood donors comes from the belief that part of the white blood cells and antibodies will be lost during blood donation, because they can help the body effectively resist the infection of pathogenic microorganisms and form the body’s “immune defense line”. It is true that blood donation will cause the body to lose part of the white blood cells and antibodies in the blood, but from the perspective of the amount of blood donated, the ratio of actually lost white blood cells to antibodies is very small. The water and inorganic substances lost after blood donation will be replenished within 1 to 2 hours. Proteins such as antibodies in plasma are synthesized by the liver and can be replenished within a day or two, and the white blood cells will quickly return to their original levels.
Myth #4: Donating blood can make people “addictive”
Some people say that after blood donation, our hematopoietic function continues to increase, which will make the blood vessels swell. If we don’t draw blood, we can’t alleviate this discomfort. In fact, this kind of “blood donation is addictive” is wrong and unfounded.
More than a decade ago, blood collection and supply institutions conducted surveys. Blood donation of 200~400ml is only a small stimulus to the human body, which will produce more erythropoietin and increase the number of red blood cells produced by bone marrow. Even if you don’t donate blood, red blood cells are aging and dying continuously. It will have a normal balance process in the body.
At present, there are tens of millions of blood donors all over the world, and there has been no case report of physiological “addiction” through blood donation.
Myth #5: Fasting before donating blood and making up after donating blood
Blood donation and blood testing at the hospital are not a process and do not require an empty stomach. If you donate blood on an empty stomach, it will easily cause dizziness and other adverse reactions because the blood sugar is too low. Before blood donation, in order to allow blood donors to achieve a better state, they must avoid eating a lot of greasy foods, causing high blood lipid levels in the blood, light diet before blood donation, and maintain adequate sleep.
Some people ask, do you need to make up after donating blood? In fact, according to the nutritional conditions and living conditions of modern people, healthy adults do not need to supplement any nutrients after donating blood. However, after donating blood, you need to pay attention to six points: ①keep the needles clean and do not rub; ②do not take a bath within 24 hours; ③do not engage in vigorous physical activities and heavy physical labor; ④do not work under high temperature or high altitude; ⑤you can drink plenty of water, Drink alcohol, eat lean meat, liver and other foods; ⑥ Be careful not to overeating.
Myth #6: Blood donation may affect sperm motility
Normal healthy adult male blood donation will not affect sperm motility, but will have certain benefits to the health of the body. One to two days after blood donation, the body’s blood volume and blood cells can be replenished without affecting pregnancy and fetal development. In addition, the fertility of the human body is mainly affected by whether the reproductive system is normal and the developmental conditions of fertilized eggs, and has nothing to do with whether to donate blood.