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我们都听说过这样的故事:2000多年前,伍子胥过昭关,一夜愁白了头。别以为“愁白了头”只是文学中夸张的表现手法,其实还是有现实依据的——美国一些科学家最近发现,巨大的压力确实会使头发变白。“愁白了头”这话,还真不是说着玩的。头发的颜色由毛囊中的黑素细胞决定,当头发干细胞中缺少黑素细胞,它们就会呈灰白色。纽约大学的研究人员们最近证实,当人类承受压力时,这些让头发呈现出不同色彩的细胞将会停止新陈代谢,或者消失。他们甚至用一群小鼠来做实验,结果,在压力荷尔蒙的状态下,也纷纷褪去了颜色。
We have all heard of stories like this: More than 2,000 years ago, Wu Zixu was over the air and melancholy overnight. Do not think “melancholy white head ” is only an exaggerated expression of literary practices, in fact, there is still a realistic basis - some scientists in the United States recently found that enormous pressure will indeed make the hair white. “Melancholy white ” This is really not talking about playing. The color of the hair is determined by the melanocytes in the hair follicles. When there is a lack of melanocytes in the hair stem cells, they are greyish white. Researchers at New York University recently confirmed that when human beings are under stress, the cells that give the hair a different color will either stop metabolism or disappear. They even experimented with a group of mice, and as a result, they also faded in color in the state of stress hormones.