科学有时无法解释一些特例。近年西方有个头发变白的记录。

回答: 伍子胥过韶关一夜急白头的传说与现实金笔2013-08-19 23:01:17

2009年,the medical journal Archives of Dermatology 记录了一个病例。

一些瑞士医生报告,有位54岁的妇女,为了头上一块区域脱发(alopecia areata,中国人称鬼剃头)来看病。经外用激素药膏治疗后,脱发停止。但几个星期后,她满头都成了白发。

In it, Swiss doctors report the case of a 54-year-old woman who came to their offices recently with a single circular patch of alopecia areata on her scalp. She was successfully treated with topical steroids — in other words, her hair stopped falling out. Yet within a few weeks, her entire scalp hair had suddenly turned white.

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