适当献血不会影响身体健康。正常人总血量约为4000~5000毫升(约占体重8%),平时有20%储存在肝脏、脾脏等脏器中。献血后,这部分储存血液会很快释放入外周血,参与身体的血液循环。而且,人体细胞不断在进行新陈代谢,如红细胞的寿命为120天,血小板为8~10天,献血可以促进血液的新陈代谢,减少心血管疾病的发生。 Appropriate blood donation will not affect your health. Normal blood volume is about 4000 ~ 5000 ml (about 8% of body weight), usually 20% stored in the liver, spleen and other organs. Blood donation, this part of the stored blood will soon release into the peripheral blood, participate in the body’s blood circulation. Moreover, the human body cells continue to be metabolized, such as red blood cell life of 120 days, platelets for 8 to 10 days, blood donation can promote blood metabolism, reduce cardiovascular disease.