We can find many blood donation stations on the streets, promoting “blood donation” because it is a great virtue to donate blood to save other people’s lives, and it is a praiseworthy virtue to help society through one’s selfless love. However, as more and more people start to donate blood for free, many misconceptions have arisen about blood donation, and I will briefly explain the “nine misconceptions” about blood donation. 1. Myth 1: You will gain weight after donating blood. Many people mistakenly believe that people will gain weight after donating blood. In fact, fatness is caused by excessive tonic intake after blood donation. In fact, according to the current standard of living, diet structure and nutritional status, there is no need to eat more after blood donation, or to take all kinds of nutrients, it is recommended to drink some water or drinks after blood donation, in addition to eating some eggs, lean meat, vegetables, milk and fruits. 2. Myth 2: Blood donation affects fertility Many men want to donate blood, but are worried that it will hurt their vitality and affect their fertility, there is no scientific basis for this idea. The fertility of a person is determined by the normal development of the reproductive system, and there is no correlation with blood donation. In fact, blood donation has many benefits. It can prevent and alleviate hyperviscosity, reduce the incidence of cardiovascular diseases, improve mental health and prolong life while helping others. People who donate blood regularly are less likely to age than those who don’t, and have greater tolerance and self-regulation in the event of an accident. 3. Myth 3: Regular blood donation is “addictive” Many people mistakenly believe that people who donate blood 10, 20 or even more times are addicted to blood donation and feel sad when they don’t give. However, it can be said that “regular blood donation is not ‘physiologically’ addictive, but it can be psychologically and spiritually ‘addictive’! ” The reason is that “donating blood all the time creates a sense of honor, and in order to enhance the sense of honor, some donors donate nine times, and one more time, they want to donate all 10 times.” Blood donation is neither smoking nor drug use, and is not related to nicotine or morphine, which are addictive substances. Blood donation does not cause the body to regenerate blood at an abnormal rate, let alone produce too much blood, forcing the donor to keep giving blood. Some young girls want to lose weight by donating blood on an empty stomach, so they don’t eat breakfast and donate blood on an empty stomach, not only can they not lose weight, but they are also prone to fainting and even create the illusion that they are prone to fainting if they donate blood. Donating blood is different from having blood drawn on an empty stomach in a hospital for biochemical tests. It is recommended that blood donors do not give blood on an empty stomach, and two light meals are required before donating blood. 5.Myth 5: Blood donation can infect diseases Most people’s concern is actually unnecessary, the current blood collection agencies used to collect blood needle bags are strictly sterilized disposable supplies, under the premise of standard management and operation, blood donation is unlikely to be infected with disease. 6. Myth 6: Blood donation can cause “abnormal blood pressure” Individual blood donors experience high or low blood pressure after donating blood, experts believe that mental tension and excitement can cause, normal people donate blood will not affect blood pressure. If this happens, as long as you take rest and maintain emotional stability, your blood pressure will soon return to normal and will never cause pathological hypertension or hypotension. 7. Myth 7: Blood donation is prone to fainting and anemia Many people think that they need to replenish their blood after donating, otherwise they are prone to anemia. In fact, blood donation will not cause anemia if the donor gives blood at the prescribed interval date. The small amount of blood donated each time will soon return to normal through the body’s regulation and does not affect the blood regeneration function. Anemia is a disease and people who are anemic should not participate in blood donation. 8. Myth 9: Blood donation will lower immunity From a physiological point of view, the main component of the body’s immunity against disease is white blood cells. If you donate 200 or 400 ml of blood at a time, the donated leukocytes only account for 1% to 2% of the total number of human leukocytes, and the lost leukocytes can be replenished from the bone marrow within 1 or 2 hours. 9. Myth 10: Blood donation will cause “deficiency” Blood donation will not cause “deficiency” or “injury”. The blood is always spitting out new things and the body’s ability to regulate the amount of blood is also very sound. In fact, when the donor leaves the blood donation site, the body has already started to replenish the donated blood. After a few hours, the blood volume reaches its normal level and no discomfort is felt. The donor can still perform non-strenuous daily tasks on the same day.