献血会让男人伤元气吗

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献血会使人“伤元气”吗?

受到“献血伤元气”等传统观念的影响，一些市民对献血还是存有诸多顾虑。究竟献血会使人“伤元气”吗?答案是“不会”。据最新研究称，定期献血的人与不献血的人相比，不仅更显年轻，不易衰老，还可预防、缓解高粘血症和脂肪肝等，更降低心脑血管疾病的发生几率。

一个健康人的总血量约占体重的8%，一个成年人的总血量约为4000～5000毫升。平时80%的血液在心脏和血管里循环流动着，维持着正常的生理北京皮肤病医院好不好功能;另外20%的血液储存在肝、脾等脏器内，一旦失血或剧烈运动时，这些血液就会进入血液循环系统。一个人一次献血200～400毫升只占总血量的5%～10%，献血后储存的血液马上会补充上来，不会减少循环血容量。

献血后失去的水分和无机物，1～2个小时就会补上;血浆蛋白质由肝脏合成，一两天内就能得到补充;血小板、白细胞和红细胞也很快就会恢复到原来水平。人体的血液在不断新陈代谢，每时每刻都有许多血细胞衰老、死亡，同时又有大量新生细胞生成，以维持人体新陈代谢的平衡。献血后，由于造血功能加强，失去的血细胞很快得到补充。所以说一个健康的人，按规定献血，对身体不会有任何影响，更不会“伤元气”，反而会有利于健康。

男人更应该献血

成熟的女性每月都会来月经，由于间断性的出血，可以刺激女性的造血系统北京青春痘权威医院，这种少量的出血是一种小小的应激，出血后造血系统就会加速生血的速度。这种刺激对于造血系统是一种良性刺激，使之不会过早产生功能减退。否则一旦身体由于某些原因大量的失血，机体造血器官就难以适应如此剧烈的变化，造血速度较慢不能满足机体的需要而明显的失血症状!也就是因为女性的月经，女性的平均寿命比男性要长好几年!

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综上所述，男性更要积极的献血，女性比男性来说(相对来讲)更适应献血!男人定期献血五大好处

1.可预防、缓解高粘血症

科学家们运用血液流变学与血液动力学对血液与献血的关系作了研究，发现坚持长期适量献血，特别是单献红细胞和血小板等有形成分，可使血液粘稠度明显降低，加快血液流速，脑血流量提高，从而达到缓解或预防高粘血症，使人感到身体轻松、头脑清醒、北京什么医院青春痘好精力充沛。

2.可预防、降低心脑血管病的发生

青岛一位专家曾对127名多次献血者、87例高血压者、60例缺血性中风者进行血液流变学的对照研究，结果表明，献血者对减少心脑血管病的发生具有积极的作用;芬兰一研究小组对278名42-60岁的男性进行调查，其中献过血的人5年后患冠心病的比例比未献过血的少86%;另一组研究，对献血l-2次的1532人进行追踪观察，结果仅一人发生急性心肌梗塞，发生率为0。043%，同期未献血的2306人中，有226人发生急性心肌梗塞，发生率为9。8%，明显高于献血组;美国一心血管病研究小组的研究亦表明，在3年中，献血者(男性)患心血管病的危险仅为未献血者的1/2。

3.男子献血可减少癌症的发生率

体内铁元素含量过低易患缺铁性贫血及行动迟缓，过高则适得北京医治青春痘医院其反。《国际癌症》曾报道，体内的铁含量超过正常值的10%，罹患癌症的机率就提高，适量献血可以预防癌症。该文还提到，女性因月经周期失血损失了一定量的铁质，故未发现女性的铁含量与癌症发生有明显关系。

4.可促进、改善心理健康

大量研究表明，健康的情绪可通过神经、体液、内分泌系统沟通大脑及其他组织与器官，使其处于良好的状态，有益于人体免疫力的增强、抵抗力的提高。而献血是救人一命的高尚品行，在助人为乐、与人为善的同时，也使自己的精神得到净化，心灵得到慰藉，工作与生活更加充实。做好事者以德施善，实际上在帮助别人的同时也帮助了自己，这是健康长寿的重要要素。

5.可延年益寿

国外也曾有学者对66岁以上的332人(献血者)与同年龄、性别的399人(未献血者)作前瞻性对照研究，结果显示：

献血组平均寿命为70.1岁，高于未献血组的平均67.5岁;

献血组的存活率为67%，高于未献血组的40%;

献血组的死亡率为33%，低于未献血组的60%。世博会演绎未来交通

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