? Requirements for blood donation:
1, age, should be 18-55 years old, not less than 18 years old and not more than 55 years old.
2. Weight: above 50kg for males and above 45kg for females.
3. Blood pressure should be between 90- 140mmHg and 60-90mmHg.
4. The pulse is generally 60- 100 beats/min, neither too high nor too low.
5, the body temperature should be within the normal range, that is, 36℃-37℃.
6. The skin has no yellow staining, no wound infection, no extensive dermatosis, or no obvious swelling of superficial lymph nodes, no serious diseases of five senses, no yellow staining of sclera, no goiter, and no abnormality of cardiopulmonary function. ?
Donating 200ml blood at a time has no effect on health, because our body has a very powerful hematopoietic function. If you donate 200ml of blood at a time, basically there will be compensatory hyperplasia in your body, and new blood components will be added soon?
The benefits of blood:
1, blood donation will make our hematopoietic stem cells more sensitive to the reaction, which will produce feedback to human bone marrow and make the speed of blood replenishment increase continuously. ?
2. After blood donation, the hematopoietic organs of the body will generate new blood cells, which will make the blood carry more oxygen and nutrients in the circulation process and have stronger ability to fight viruses and bacteria. This process not only promotes metabolism, but also prolongs life. ?
3. It is necessary to generate new blood cells after blood donation, so that the body will consume a certain amount of heat. It's also good for losing weight.
4. It can relieve and prevent blood viscosity, thus preventing the incidence of some cardiovascular and cerebrovascular diseases from increasing. Blood donation can reduce the viscosity of blood, accelerate cerebral blood flow and reduce the contents of iron and copper in blood. ?