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O型血患阳痿的概率低?血型与健康的相关性暂无定论

科普中国-科学为你解疑释惑 2018-07-12

  关于血型与健康的关联性一直备受争议。《中国妇女报》曾在报道中提到,一篇名为《炸了!血型也分贵贱?科学家认准最强血型是……》的文章火爆了网络,引起众多人的关注。该文章说,O型血阳痿的概率低、不容易患老年痴呆,发生血栓的可能也比较小。另外,各国研究还发现O型血对于疟疾、胃癌或肝癌的耐性也比较强,就算得病了,也比较能抵抗。

  那么事实真是如此吗?O型血的人真的更不易得病吗?血型和健康真的有关系吗?

  关于血型的说法和研究一直以来都是“百家争鸣”,人民网科普中国采访了安徽医科大学第一附属医院输血科主任卞茂红和副主任医师杨鹏。

  卞茂红简单介绍了血型分类的依据:“最常见的A型、B型、O型血是根据红细胞上的抗原命名的,而不同血型中会有相应的抗体存在。红细胞上仅有抗原A为A型,A型血中有抗体B;只有抗原B为B型,B型血中有抗体A;若同时存在A和B抗原则为AB型,此时血中就不含抗体A、B了;A、B抗原均无的为O型,而相应的0型血中存在着抗体A、B。因此我们可以简单地总结说,对于某种疾病,如果不同的抗原类型可以导致不同的结果,那么,血型就和这种疾病有关;反过来,任何与红细胞抗原类型无关的疾病,和血型也没有关系。”

  杨鹏对文章中的疾病及成因做了具体分析,他表示,从文章中提到的疾病来看,首先阳痿与阴茎的海绵体有关,目前的研究还没有发现其患病原因与血型有相关性。而老年痴呆的病因则颇为复杂,虽然有前瞻性研究表明血型对其有一定的影响,但是样本量较小,相关研究也不多;此外,老年痴呆的病因目前仍不明确,遗传相关性研究没有突破性进展,因此目前不能说两者存在何种联系。而胃癌和幽门螺杆菌感染密不可分这一结论已经被研究证实。

  杨鹏还表示:“我们在临床工作中也会收集许多病例来分析血液与某些疾病的相关性,由于疾病的复杂性和血型分布的差异,不同的研究方法会对研究结果产生重大影响。在血液学科中,从20世纪50年代起,就有学者研究血型和疾病的关系,但疾病的原因是复杂的,往往由多种因素共同决定,不同地区、不同种族,血型分布差异极大,也对研究方法产生了挑战,所以至今仍然没有定论。”(吴欣志)

  本文由中国人民解放军总医院第一附属(304)医院八一大楼门诊部主任彭国球进行科学性把关。(专家领域:健康养生类、临床医学类、心理医学类)

责任编辑:王超

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