摘要：FREQUENT blood donors might be getting more than a warm, fuzzy feeling from their altruism, as giving blood may also enhance your

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新科学家杂志3.22

FREQUENT blood donors might be getting more than a warm, fuzzy feeling from their altruism, as giving blood may also enhance your ability to produce healthy blood cells, potentially reducing the risk of developing blood cancer.

经常献血的人在践行善举时，除了获得内心的温暖与满足感，还可能收获额外的健康益处——献血行为或能增强人体生成健康血细胞的能力，从而可能降低罹患血液系统恶性肿瘤的风险。

Hector Huerga Encabo at the Francis Crick Institute in London and his colleagues analysed genetic data extracted from blood cells donated by 217 men in Germany, aged between 6o and 72, who had each given blood more than 100 times.

伦敦弗朗西斯·克里克研究所的Héctor Huerga Encabo及其团队对德国217名年龄在60至72岁之间的男性献血者的血细胞基因数据进行了分析，这些男性每人累计献血超过100次。They also looked at samples from 212 men of a similar age who had donated blood fewer than 10 times each, and found that frequent donors were more likely to have blood cells carrying certain mutations in a gene called DNMT3A.

研究人员同时对比了212名同龄但献血次数少于10次的男性样本，发现频繁献血者的血细胞更可能携带名为DNMT3A基因的特定突变。

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来源：小月课堂