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Why do women sprout chin hairs as they age?
为什么女人上了年纪后下巴会长毛？
If you’re a woman who is growing new, unwanted chin hairs, the first thing you should know is that most of the time, “this is perfectly normal,” said Dr. Joel L. Cohen, a dermatologist and director of AboutSkin Dermatology and DermSurgery in Denver. As women get closer to menopause, he said, the balance of hormones in their bodies shifts, and they can start producing more male-type hormones known as androgens.
丹佛AboutSkin皮肤科医院皮肤外科主任医师乔尔·科恩称在大多数情况下，如果女性下巴长出了多余的新毛发，首先你应该知道的是，“这是非常正常的”。他说，随着女性接近绝经期，她们体内的荷尔蒙平衡会发生变化，她们会开始产生更多的雄性荷尔蒙，即雄激素。
These androgens, Dr. Cohen said, can transform the kinds of hair follicles that women typically have on their faces — ones that produce short, thin, light hair known as peach fuzz — into follicles that make thicker, darker hair. As for why some women sprout these hairs and others don’t, that’s often down to genetics, said Dr. Angela Lamb, a board-certified dermatologist at Mount Sinai in New York City. If you’re growing unwanted hair and your mother, sister or grandmother did too, then that’s a good sign that this kind of hair growth runs in the family.
科恩医生表示，这些雄性激素可以使女性脸上的毛囊发生改变，从又短又细的浅色毛发，也就是桃子绒毛变成长出更粗更黑毛发的毛囊。纽约西奈山医院的皮肤科认证医师安吉拉·兰姆说，至于为什么有些女性长这种毛发，而有些没有，这通常与基因有关。如果你长了多余的毛发，并且你的母亲，姐妹或外祖母也长了多余的毛发，那么这是一个好迹象，表明这是家族遗传的毛发生长基因。
There are many safe ways to remove unwanted facial hair, including tweezing, waxing, threading, shaving or using depilatory creams. If you’re worried that any of those techniques will cause your hair to grow back thicker, you can relax on that front. “It’s a myth,” Dr. Lamb said. In fact, the opposite can even happen: Waxing, tweezing or threading can reduce hair growth, because some hair follicles get damaged by the removal process and stop producing hair, she said.
有很多安全的方法去除多余的面部毛发，包括用镊子、蜜蜡、棉线、剃刀或者脱毛膏。如果你担心上述这些方法会让你的毛发长得更粗，你可以放心。兰姆博士表示，“这是一个错误的观点”。她说，事实上，甚至会发生相反的情况：脱毛、用镊子拔毛或用棉线会减少毛发生长，因为一些毛囊会在脱毛的过程中受损，从而导致不再长毛。
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