Donating blood in moderation can help your health and save lives by helping others. However, it is worth noting that blood donation should not be too frequent, and the age of donation should be 18-55 years old, the interval between blood donations should be more than 6 months, and the amount of blood donated each time should be 200-400 ml. The main benefits of blood donation are as follows: 1. 2. Enhancement of hematopoietic function: Proper blood donation can promote the metabolism of blood cells, stimulate bone marrow hematopoiesis, produce new red blood cells and enhance hematopoietic function; 3. Reduction of iron concentration in blood: A moderate amount of blood donation can reduce the concentration of iron in the body’s blood, which can reduce the damage caused by iron to internal organs. This is because if the concentration of iron in the body is too high, it will be deposited in the liver, heart and other organs, which will increase the burden on the organs and thus cause discomfort to the body. 4. Free clinical use of blood: If a blood donor needs clinical use of blood, he or she is exempted from paying the fees specified in the preceding paragraph. In addition, if the spouse or immediate family members of the blood donor need blood, they are exempted from or have their fees reduced according to the regulations of the people’s government of the province, city, autonomous region or municipality directly under the central government. 5. Contribution to psychological health: Blood donation helps regulate the neurohumoral-endocrine system and improves the psychological activity of the person, thus contributing to psychological health. In addition, it is worth noting that you should not take medication or drink alcohol 3 days before blood donation. On the day of blood donation, you can eat customary meals, which should not be high in fat or too greasy, and you can eat more food rich in iron, protein and vitamin C. After blood donation, pay attention to protect the eye of the needle to avoid blood seepage. It is not recommended to touch water for 24 hours to avoid infection.