What you should know about blood donation, how long should the interval between two blood donations be?

Voluntary blood donation refers to the act of selflessly donating one's own blood to social welfare undertakings in order to save others' lives, and the blood donors do not charge more than the transportation expenses, lost time and other expenses and remuneration necessary for blood donation. Do you know how long it takes to donate blood? Article 9 of the Blood Donation Law stipulates that blood stations generally collect 200 ml of blood from blood donors at a time, with a maximum of 400 ml. This provision is based on China's long-term actual situation and the amount of blood that a healthy citizen can donate without affecting human health. The Blood Donation Law stipulates that the interval between two blood collections shall not be less than 6 months. The average life span of red blood cells is 120 days, and the interval between two blood donations is more than 3 months. The reason why the interval of blood donation is not less than 6 months is entirely from the perspective of protecting the health of blood donors and ensuring blood quality. ? The total blood volume of healthy people accounts for about 8% of body weight, and that of adults is about 4000 ~ 5000 ml. Usually, 80% blood circulates in the heart and blood vessels to maintain normal physiological functions; Another 20% of the blood is stored in the liver, spleen and other organs. Once blood loss or strenuous exercise occurs, blood will enter the blood circulation system. Regular blood donation is beneficial to human body, such as reducing blood viscosity, promoting blood circulation and avoiding blood stasis. It can also stimulate the hematopoietic function of bone marrow and enhance the production of red blood cells. Donating plasma and platelets can also reduce the fat content in blood and reduce blood lipids. In addition, after donating blood, the blood donors themselves and their immediate family members can enjoy a certain amount of free blood use, which is conducive to the treatment of diseases in the future. However, it should be noted that blood donors have certain health requirements, and patients with obvious cardiovascular and cerebrovascular diseases, anemia or infectious diseases are not allowed to donate blood. Free blood donation is a noble act of selfless dedication and saving lives. Blood donation is a manifestation of love and dedication, which can alleviate the suffering of the injured and even save their lives. But remember: the interval between two blood donations should be six months!