编辑同志:我年轻时是少白头,不到30岁头发就全白了,非常苦恼。前不久,我看到一篇文章,说外国医学研究证实,白发的生成其实是身体的一项自我保护机制在起作用,长白头发表明生成黑色素的干细胞的基因遭到了破坏,并且被清除了。如果这些 Editor’s Comrade: When I was young, I was plain and gray. I was very distressed when my hair was less than 30 years old. Not long ago, I read an article saying that foreign medical research has confirmed that the generation of white hair is actually a body’s own protective mechanism at work. The long-haired hair shows that the gene of melanin-producing stem cells has been destroyed and has been cleared . If these